I have a Scorpion, EVO3, KP-9, Ruger PC Charger, and now an AR-V I just assembled from their Essential build kit (bolt, upper/lower).
CZ and KP-9 are true clones of accomplished military weapons. It shows. Scorpion is crazy modular and easy to take apart. KP-9 fit and finish are top notch. Kalish decided to ship their guns without notch in safety to lock bolt back and want something like $40 for "correct" one. They also price their mags stupidly high.
Cheap, Vityaz mags can easily be found from Russia for $20-$25 and run great in my KP-9.
Shot all three a lot yesterday (left Ruger at home). AR-V is just plain fun and super light with 5.5" barrel. If I had to choose just one of the three, I'd be hard pressed to make a decision. Just get all three, or four. LOL!!!