re: If you had to choose: Walther PPQ, HK P30 LEM v1, HK VP9, sig 226

The Sig p226 also can be bought in a hammer fired DAO like the HK LEM. It's the DAK version and if you could shoot those two side by side you'd really be able to tell which one you want. Those two would be a the top of my list, but I've never fired a DAK.

I don't see any advantage to striker over a hammer fired DAO except price.