Hirame Yoko, but I've heard good things about the KCNC and it's cheaper. If you don't need something compact to fit a disc wheel, the stock SKS EVA chuck is fine.
To be more specific, my LBS has both the EVA and Multivalve models at the same price (and the more primitive Hebelstecker too). Is there any practical difference?
I swapped out the stock EVA head for the multi-valve head, as it kept slipping off prestas in general and even from new would rarely seal properly on my gf's valve extenders. The MV seems a much better fit.
Hirame Yoko, but I've heard good things about the KCNC and it's cheaper. If you don't need something compact to fit a disc wheel, the stock SKS EVA chuck is fine.