WASD now has a full set of vim keycaps

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

Same switches, so they will feel similarly.

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

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.