I will certainly concede that as long as you aren't buying the 1st release (and possibly the second) from Sig they make reliable guns. One of my problems is Sig letting the end user do the beta testing. ALL of my Sigs will run with whatever I feed them. BUT........the SP-01 Tac (I own the same or, did before the boating accident), as you have already posted it feels MUCH better, has more parts options available AND places to get work done on it. I also think CZ gives you more gun for the buck.