Re: which holonomic drivetrain do YOU think is the best any why???
 

Personally, I like mecanum, because you don't have the weird angling issues that you get with using omni-wheels, and it's pretty much plug-and-play with a standard 4wd with 4 gearboxes from a hardware standpoint.

Even though swerve drive is probably the best drivetrain, You need to ask yourself: Is this doable with our timeframe, our experience level, and our resources? If not, you need to think about alternatives.