There's a LOT of discussion on mech keyboards out there, WASD makes pretty good keyboards, and das makes pretty good keyboards as well- some actually credit them for the popularity of blank keycaps. As soon as you figure out what keyswitch you like, then it's just a matter of build quality and extra features. Most importantly, how much you're willing to pay.

To my mind Das is a bit overpriced and feature-limited, the Ducky zero has similar functionality at half the price.

I don't know about the quality of the das' keycaps, but wasd aren't the best, they're ABS and kind of thin.

Same switches, so they will feel similarly.

I'd say they're on par with das.