Originally started with robotshop omniwheels, but switched to andymark wheels when robotshop removed the wheel I wanted from their product line: youtube.com/watch?v=IdOF9dfA4ZQ
jgeating.wordpress.com/2016/03/ … eel-robot/
I think brushless motors and VESCs [currently at least] are the way of the future for makers, who need affordable parts. They will outperform any brushed setup in power density, offer higher top speeds, and can pack as serious punch when you have a controller to match it.