Have several CZ (SP01, Shadowline) and just bought a 320. Bought 320 after trying both FNS , Glock and 320 on the same day. As far as striker guns go, 320 is the BEST hands down. This is based on grip, accuracy muzzle control and just plain fun to shoot.
As far as CZ goes, CZ is a completely different animal. It is by far my most favorite gun. I shoot (not well) both IPSC and Multi-gun (used to be 3gun tactical) and there is no better toy than CZ line. However, you cannot really compare hammer and striker guns - so get both CZ and 320. Just my 2 cents worth.