Which is better for smoothies?

Both handle smoothies well. The Super Q adds two dedicated smoothie programs and a 24 oz cup for single servings, so it is easier for daily one-person blends.

The Super Q carries a 10-year limited warranty against the VX1's 5 years, so Breville backs its machine for twice as long.

Is the Vitamix VX1 worth stepping up to?

Only if you want the simpler variable-speed dial and a smaller footprint. The Super Q gives you more speeds, programs, a personal cup and a longer warranty.

Can the Breville Super Q crush ice?

Yes. It has a dedicated crushed ice program and an 1800-watt motor built for frozen work.

Which is easier to fit on a counter?

The VX1 is slightly narrower at 11 in wide and 8 in deep. The Super Q is 10.5 in wide but heavier at 7.02 kg.

Does either blender make hot soup?

The Super Q has a soup program that blends and heats through friction. The VX1's listed specs show no soup program.

Breville Super Q Blender vs Vitamix VX1 Blender

The Super Q is the more versatile machine: 1800 watts, 12 speeds, five one-touch programs, a 68 oz jug plus a 24 oz personal cup, and a 10-year warranty. The Vitamix VX1 is the simpler, narrower pick with a 64 oz jug, 10 variable speeds and a 5-year warranty. Buyers who want preset programs, a to-go cup and a longer warranty lean Breville; buyers who want the classic Vitamix variable-speed dial and a smaller footprint lean Vitamix.

Choose the Breville Super Q if you want one-touch programs, a personal blending cup and the longest warranty in this pair.
Choose the Vitamix VX1 if you prefer a straightforward variable-speed dial and a slightly smaller countertop footprint.

Prices

Breville Super Q Blender: $214.88 at eBay (checked today)
Vitamix VX1 Blender: $379.95 at Walmart (checked today)
Difference: the Breville Super Q Blender is $165.07 cheaper than the Vitamix VX1 Blender today