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Flash F20 All-In-One Home Gym vs Speediance Gym Monster 2

The Flash F20 is a true rack-and-cable gym: a Smith machine, squat rack with J-cups and spotter arms, a functional trainer, and a full free-weight package with barbell, plates and bench. The Speediance Gym Monster 2 is a compact digital machine with up to 220 lb of motorized resistance, a 21.5-inch touchscreen and guided programs, but no barbell, rack or free weights. Buy the Flash F20 if you want to squat, bench and deadlift with real plates and a spotter. Buy the Gym Monster 2 if space is tight, you train alone, and you want guided cable work with almost no setup. Owners of both rate them highly; the Gym Monster 2 draws complaints about slow accessory changes and weaker leg training, while the Flash F20 is a large, fixed steel structure you assemble once.

  • Choose the Flash F20 if you want a real barbell rack, Smith machine and free weights in one frame and have the floor space for an 84-inch-wide footprint.
  • Choose the Gym Monster 2 if you live in a small space, train solo, and want motorized resistance with a screen that coaches you through each set.

Prices

  • Flash F20 All-In-One Home Gym: $3,495.00 at Flash Fitness (checked today)
  • Speediance Gym Monster 2: $2,579.00 at Speediance US (checked today)
  • Difference: the Speediance Gym Monster 2 is $916.00 cheaper than the Flash F20 All-In-One Home Gym today
Flash
Flash F20 All-In-One Home Gym

Flash F20 All-In-One Home Gym

4.9(67 ratings)
$3,495.00at Flash FitnessChecked 57 min ago
See all prices and details
Visit Flash Fitness
Pros
  • Smith machine, squat rack and functional trainer in one frame
  • Includes 270 lb of plates, a 45 lb Olympic barbell and an adjustable bench
  • Safety spotter arms make heavy solo lifting safer
  • 14-gauge steel and 2x2-inch uprights feel solid
  • Multi-grip pull-up bar with four grip positions
Cons
  • Large fixed footprint that needs a dedicated room
  • No screen, app or guided programming
  • Nylon pulleys and a 2:1 cable ratio mean cable resistance is half the stack weight
  • Assembly is a project, not a 30-minute job
Speediance
Speediance Gym Monster 2 Smart Home Gym

Speediance Gym Monster 2

Speediance Gym Monster 2 Smart Home Gym

4.9(483 ratings)
$2,579.00at Speediance USChecked 57 min ago
See all prices and details
Visit Speediance US
Pros
  • Up to 220 lb of digital resistance in 1 lb steps
  • 21.5-inch touchscreen with 1000+ coach-led workouts
  • Four resistance modes, including eccentric and chain
  • Compact and easy to move and store
  • Most functionality works without a subscription
Cons
  • No barbell, rack or free weights
  • Owners say leg training is weaker than upper-body work
  • Switching accessories between exercises slows sessions
  • Heavy to carry upstairs; needs two people
  • Some features are limited without a subscription

What separates them

Flash F20 All-In-One Home GymSpeediance Gym Monster 2
Resistance sourceTwo 160 lb weight stacks plus free plates on a 7-foot Olympic barbellDual direct-drive motors, up to 220 lb digital resistance in 1 lb steps
Barbell and rack workSmith machine with bearing-glide bar, J-cups and safety spotter armsCables and handles only; no barbell, rack or spotter
Footprint64 by 84 by 86 inches, fixed steel frameCompact and movable; owners say it stores easily
Guided trainingNo screen or app; you program your own sessions21.5-inch touchscreen, 90+ plans, 1000+ workouts, AI coaching
Leg trainingSquats, lunges and deadlifts with plates and a rackOwners report leg work is less effective than upper body
Setup and switchingAssemble once; plate changes are manual but instantQuick to assemble; changing accessories between exercises takes time
Build14-gauge steel, 2x2-inch uprights, nylon pulleys, aluminum pulley housingMotorized unit; owners call it heavy to move upstairs
SubscriptionNone; all hardware works without an appMost functions work without one; some features are limited without a subscription

Price history

$3,750.00$2,579.00
Nov 10Nov 12
  • Flash F20 All-In-One Home Gym: lowest $3,750.00 on Nov 10 at FlashFitnessTx; $3,750.00 on Nov 12.
  • Speediance Gym Monster 2: lowest $2,579.00 on Nov 12 at Speediance US.

Prices at every store

Flash F20 All-In-One Home Gym

  • Flash FitnessNew

    In stockReturn policy

    $3,495.00Checked 57 min ago
    Visit Flash Fitness
  • FlashFitnessTxNew

    In stock

    $3,750.00+ $150.00 shippingChecked 56 min ago
    Visit FlashFitnessTx

Also available at

  • FlashFitnessTxCheck price at FlashFitnessTx
All 2 stores and price history →

Speediance Gym Monster 2

  • Speediance USNew

    In stock

    $2,579.00Checked 57 min ago
    Visit Speediance US
  • WalmartNew

    In stockSold by SpeedianceReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $2,719.00Free shippingChecked 59 min ago
    Visit Walmart
  • Best BuyNew

    In stock

    $2,809.00Checked Nov 11
    Visit Best Buy
  • Macy'sNew

    Availability unknown

    $2,809.00Checked 17 h ago
    Visit Macy's
All 5 stores and price history →

Specs compared

SpecFlash F20 All-In-One Home GymSpeediance Gym Monster 2
Dimensions64”L × 84”W × 86”H—
Frame steel14-gauge steel—
Uprights2 x 2" Uprights—
Cable ratio2:1 Cable Ratio—
PulleysNylon Pulleys—
Weight stacks2-160lb weight stacks—
Weight storage posts6 - Weight plate storage posts—
Pull-up grips(4) Grips—
Pulley MaterialAluminum—
Color—Black

What reviewers say

Flash F20 All-In-One Home Gym

  • 4.9 / 567 ratings

Owners rate the F20 highly and describe it as a complete gym in one frame. The Smith bar and cable glide draw the most praise, while a few note the stack weight and the space it takes up.

What people mention
  • Smith barPraisedOwners say the bar glides smoothly on its bearings and tracks a consistent path.
  • VersatilityPraisedBuyers describe it as a full gym in one frame that covers barbell, cable and pull-up work.
  • Cable stacksMixedCables feel precise, but the 160 lb stacks and 2:1 ratio limit resistance for strong lifters.
  • FootprintCriticisedThe 64 by 84 inch base plus bar clearance needs a large room.

Speediance Gym Monster 2

  • 4.9 / 5483 ratings

Buyers rate the Gym Monster 2 very highly, praising smooth cables, easy setup and the large free workout library. Most say it replaces a gym membership and home free weights. Complaints center on slow accessory changes, weaker leg training and a subscription gate on some features.

What people mention
  • Cable feelPraisedOwners describe the cables as smooth and the resistance easy to adjust mid-set.
  • FootprintPraisedBuyers like that it fits in small rooms and is easy to move and store.
  • Workout libraryPraisedThe large set of free programs and movements is a common highlight.
  • Accessory changesCriticised

Questions and answers

Which is better for building serious leg strength?
The Flash F20. It gives you a barbell, plates, a rack and spotter arms for squats and deadlifts. Gym Monster 2 owners repeatedly say leg training feels less effective than upper-body work on the cables.
Can the Gym Monster 2 replace free weights entirely?
For many people, mostly. It offers up to 220 lb of smooth digital resistance and a large exercise library. It cannot replicate a loaded barbell squat or bench press, so lifters chasing big compound numbers will miss the rack.
Which takes up less space?
The Gym Monster 2 by a wide margin. The Flash F20 is a fixed 64 by 84 by 86 inch steel structure. The Gym Monster 2 is compact and can be moved and stored against a wall.
Do I need a subscription for either?
No for the Flash F20, which has no app at all. The Gym Monster 2 works without a subscription for most functions, but some features are limited without one.
Which is easier to set up alone?
The Gym Monster 2. Owners report quick assembly, though it is heavy to carry upstairs and may need two people. The Flash F20 is a full rack build with stacks, cables and plates.
Is the Gym Monster 2 worth stepping up to over a cable machine?
If you want guided programs, digital resistance and a small footprint, yes. If you mainly want heavy cable work and free weights, the Flash F20 covers more ground.

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Swapping handles and attachments between exercises takes time and interrupts the session.