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TCL 43" Q51K QLED 4K Google TV vs TCL S55LR 43" 4K Roku TV

Buy the Q51K if picture quality matters most. Its QLED panel, HDR10+ and Dolby Vision support, and AIPQ processing give it visibly better color and contrast than the S55LR's standard LED panel with HDR10 only. The S55LR counters with the simpler Roku interface and a newer 2026 model year. Both are 43-inch 60Hz 4K sets with Motion Rate 240, so the split comes down to panel technology and smart platform, not size or motion.

  • Choose the TCL Q51K if you want the better picture for movies and gaming, with QLED color, Dolby Vision and HDR10+ support, and Google TV.
  • Choose the TCL S55LR if you prefer the Roku interface and its mobile app with private listening, and want the newest model year.

Prices

  • TCL 43" Q51K QLED 4K Google TV: $218.00 at Walmart (checked today)
  • TCL S55LR 43" 4K Roku TV: $185.00 at Walmart (checked today)
  • Difference: the TCL S55LR 43" 4K Roku TV is $33.00 cheaper than the TCL 43" Q51K QLED 4K Google TV today
TCL
TCL 43" Q Series QLED 4K UHD HDR Smart Google TV - 43Q51K

TCL 43" Q51K QLED 4K Google TV

TCL 43" Q Series QLED 4K UHD HDR Smart Google TV - 43Q51K

4.4(15,402 ratings)
$218.00at WalmartChecked 46 min ago
See all prices and details
Visit Walmart

Store links may earn us a commission. Price via Klarna.

Pros
  • QLED panel delivers richer color and brightness than standard LED
  • Dolby Vision and HDR10+ support cover more streaming content
  • AIPQ processor sharpens and balances each scene
  • Dolby Atmos audio support
  • Large, established owner base with strong ratings
Cons
  • Google TV interface can feel busier than Roku
  • 60Hz panel limits high-frame-rate gaming
  • No Roku private-listening app
TCL
TCL 43” Class S55LR Series 4K HDR LED Smart Roku TV (New 2026)

TCL S55LR 43" 4K Roku TV

TCL 43” Class S55LR Series 4K HDR LED Smart Roku TV (New 2026)

4.1(23 ratings)
$185.00at WalmartChecked 46 min ago
See all prices and details
Visit Walmart

Store links may earn us a commission. Price via Klarna.

Pros
  • Roku interface is simple and fast to learn
  • Roku mobile app adds private listening and voice search
  • Newest 2026 model year
  • Auto Game Mode for consoles
  • One-year parts and labor warranty
Cons
  • Standard LED panel with narrower color than QLED
  • HDR10 only, no Dolby Vision or HDR10+
  • Few owner ratings so far, and a lower average

What separates them

TCL 43" Q51K QLED 4K Google TVTCL S55LR 43" 4K Roku TV
Panel technologyQLED with quantum dot layer for wider colorStandard 4K LED panel
HDR formatsHDR10, HDR10+, HLG and Dolby VisionHDR10 only
Smart platformGoogle TVRoku TV with mobile app remote and private listening
ProcessorTCL AIPQ processor with scene-by-scene optimizationStandard 4K processing
AudioDolby Atmos supportNo Dolby Atmos listed
Model year20252026
Refresh rate and motion60Hz with Motion Rate 240 and MEMC60Hz with Motion Rate 240
Owner feedback4.4 average from over 15,000 ratings4.1 average from a small number of ratings

Price history

$218.00$185.00
Nov 7Nov 11
  • TCL 43" Q51K QLED 4K Google TV: lowest $218.00 on Nov 7 at Walmart; $218.00 on Nov 11.
  • TCL S55LR 43" 4K Roku TV: lowest $185.00 on Nov 8 at Walmart; $185.00 on Nov 11.

Prices at every store

TCL 43" Q51K QLED 4K Google TV

  • WalmartNew

    In stock

    $218.00Free shippingChecked 46 min ago
    Visit Walmart

Also available at

  • WalmartCheck price at Walmart

Store links may earn us a commission. Price via Klarna.

Prices and history →

TCL S55LR 43" 4K Roku TV

  • WalmartNew

    In stock

    $185.00Free shippingChecked 46 min ago
    Visit Walmart
  • Best BuyNew

    In stock

    $219.99Free shippingChecked 46 min ago
    Visit Best Buy

Also available at

  • WalmartCheck price at Walmart

Store links may earn us a commission. Some prices via Klarna.

All 2 stores and price history →

Specs compared

SpecTCL 43" Q51K QLED 4K Google TVTCL S55LR 43" 4K Roku TV
screen_size43 in43"
colorBlackBlack
Resolution4K4K
Refresh rate6060 Hz
Operating systemGoogle TVGoogle TV
HDR TypeHDR10+HDR10
Screen Resolution3840x2160 (4K Ultra HD)3840x2160 (4K Ultra HD)
Smart TVYesYes
Release Year20252026
HDRYesYes
DisplayQLEDLED
Display technologyQLED—
Show all 26 specsShow fewer specs
SpecTCL 43" Q51K QLED 4K Google TVTCL S55LR 43" 4K Roku TV
Motion enhancementMEMC—
HDR formatsHDR10, HDR10+, HLG—
ConnectivityBluetooth, HDMI, USB, Wi-Fi—
Bluetooth version5—
Dimensions3"D x 37.6"W x 21.8"H—
Response time1 millisecond—
Panel type—4K LED panel
Backlight—High Brightness LED Backlight
Motion rate—Motion Rate 240
HDR support

What reviewers say

TCL 43" Q51K QLED 4K Google TV

  • 4.4 / 515,402 ratings

With 4.4 out of 5 across more than 15,000 ratings, owners mostly see the Q51K as strong value for a small QLED set. Praise centers on picture and color for the price and easy Google TV setup; complaints tend to be about sound and brightness.

What people mention
  • Picture qualityPraisedOwners say color and clarity beat what they expected at this price.
  • ValuePraisedBuyers call it a lot of TV for the money in the 43-inch class.
  • SetupPraisedGoogle TV setup and sign-in are described as quick and simple.
  • SoundCriticisedReviewers find the built-in speakers thin and recommend a soundbar.

TCL S55LR 43" 4K Roku TV

  • 4.1 / 523 ratings

Owners and reviewers give the TCL S55LR solid marks for its user-friendly Roku interface and good value, but note that picture quality is merely adequate for the price. Many appreciate the easy setup and streaming options, while some wish for better contrast and brightness.

What people mention
  • Picture qualityMixedReviewers say the 4K picture is sharp, but HDR impact is limited by modest brightness and average black levels.
  • Roku interfacePraisedOwners find the Roku smart platform easy to use and appreciate the wide app selection.
  • Motion handlingCriticisedSome note that fast-moving scenes can look blurry due to the 60 Hz panel.
  • ValuePraised

Questions and answers

Which has the better picture?
The Q51K. Its QLED panel and Dolby Vision/HDR10+ support produce wider color and better contrast than the S55LR's standard LED panel with HDR10 only.
Which is better for gaming?
They are close. Both are 60Hz with Motion Rate 240, and the S55LR adds Auto Game Mode. The Q51K's 1ms response time and brighter QLED panel favor it for picture, but neither is a high-refresh gaming set.
Is the Q51K worth stepping up to over the S55LR?
Yes if you watch a lot of HDR movies or care about color depth. The QLED panel and extra HDR formats are a real upgrade. If you mainly want a simple interface, the S55LR is enough.
Which smart platform is easier to use?
Roku on the S55LR is simpler and more consistent. Google TV on the Q51K surfaces recommendations across apps but has a busier home screen.
Which lasts longer?
Both are budget TCL sets with similar build quality, and neither has a clear reliability edge. The S55LR lists a one-year parts and labor warranty; check the Q51K's warranty terms before buying.
Do both support voice control?
Yes. The Q51K uses Google TV voice search through the remote, and the S55LR supports voice search through the Roku app and remote.

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Buying guides that pick them

  • Best cheap 43-inch TVs
—
HDR support
Smart platform—Roku TV
Wi-Fi—Built-in Wi-Fi
Game mode—Auto Game Mode
Warranty—1-year parts and labor warranty
Many consider it a good budget option for a 4K smart TV.