So im curios about What is the best motors to move a robot around in 20 pounds, 50 and 100 pounds. With a budget of max 1500 pounds.

I want to buy a pair or 2 great motors to use to build differents robotic platforms in the same weight limit. But I'm a bit in doubt of what size of robots I want to build.

Are we talking about that the ampflow 28-400 and the etek motor is the best valued on price pr hp?