MusclesMcGee-I own both. These two frames fit my hand like a glove. In my experience, the early CZ75's, mine are very early versions with no import markings, are just as accurate as my Brownings. I have fired the newer, mid 90's, CZ's and found them to be of a lower quality standard than mine and reflect that in the accuracy department. Overall, I would steer you towards the Hi Power. Very accurate, but getting more expensive to own. I don't like the newer stocks of the Hi Powers. They just don't feel right.
Steve