I have one in .223, and have had a couple in 7.62x39...wish I still had one of those as well. These are nice guns, very accurate, compact and handy. They do need rings that are a bit higher than many guns, although a bit of grinding at the root of the bolt handle can work wonders towards curing this glitch. The only other negative I can think of is that they haven't got the most wonderful triggers...the set trigger option is nice, but un-set the trigger is very creepy, jerky and inconsistent. I've largely corrected this with a bit of careful polishing, but it's something to consider. I also prefer non-detachable mags, but to be fair, I've never had one of these pop out or get lost.
I've also owned a Zastava M85...yes, they are cheaper, but IMHO they aren't anywhere near the quality of the CZ...nor even near the 90% mentioned above. I'd never own another one.