I own IMI and IWI versions, both steel and polymer frame. All are great, reliable shooters that eat everything I feed them. EVERYTHING. I have an all steel, hard chrome, SAO, Star of David Jericho model that was imported after being retired from either military or police use in Israel. It was WELL used and extremely crusty. It still ran like a sewing machine before any cleaning or maintenance. It has a very nice, unmodified single action trigger. They take a variety of CZ & clone mags, including extended versions. They’re extremely simple to work on and upgrade with easy to find parts. They don’t have that retarded firing pin retaining pin either. I personally have never fired a PO7 but have owned a PO1 Omega and CZ75 Transitional model, both also good shooters. I started with a 2015 IWI Jericho 941 polymer compact model then tried the CZ’s. Ultimately I sold my CZ’s and only fool with clones, as far as the CZ platform is concerned. There are just a few quirks with CZ that turned me off. Though they do make some fine guns, the ones I want are too expensive for me.