PowerSmart 21-Inch Gas Push Mower vs Troy-Bilt TB120 Gas Push Mower

Both are 21-inch, 140cc gas push mowers, so the cut and the engine class are the same. The PowerSmart is the better-documented machine: Briggs & Stratton 550ex engine, steel deck, 6 height positions, 2-in-1 bag and mulch, and a 4.4 rating from 67 owners. The Troy-Bilt TB120 is the simpler, lighter-feeling choice with a strong reputation for easy assembly and first-pull starts, but it lists fewer published specs. Buy the PowerSmart if you want mulching and a known engine brand; buy the Troy-Bilt if you want a basic bagging mower from an established US brand.

• Choose the PowerSmart if you want a Briggs & Stratton engine, mulching plus bagging, and six cutting heights in one 21-inch push mower.
• Choose the Troy-Bilt if you want a plain 21-inch gas push mower from a long-standing US brand and mostly bag your clippings.