I have never owned the CZ. but I love my PT145. I mean. ADORE it. Great shooting little gun. Like all pistols, they probably need a break in... Mine certainly didnt. Has one heck of a recoil spring, making it difficult to charge for some people who may have less strength to do so. I know my wife loves it as well. She shoots it almost as much as I shoot my 22! think about size, and magazine costs, parts availability, reliability records, things like that. You cant go wrong if you're happy.
I know that doesnt help much, but I do love my PT145. I would recommend it to anyone.