You should go down and get some rounds in with that AK before you get willing to drop that CZ. A mate of mine that I did a course with in the states has owned 3 different AK's, 1 romanian, 1 Asenal and 1 other one. For years he didnt even know what a vz58 was. Then he shot one and was like "why dont i own this?"
Things such as:
-bolt hold open
-shorter stroke on the charging handle
-milled receiver
-lighter weight [depending on AK brand]
-better stock trigger than similar costed AK
all play a part when it comes to the CZ being a 'finer' fashioned firearm. The real way to tell is to take a weekend carbine fighting course with and AK and then with a CZ. Pop an ambi mag release on the CZ and you will have a way easier time on that course.
And the odd, odd, odd time that s**t goes up hill and an AK or CZ jams it's nice to be able to look right into the receiver on the CZ and get s**t fixed. This is a touch tougher with the ejection port of the ak.
I would own the s**t out of an AK, if i could, but after having put 800-1000 rounds through a decent brand; I'd keep my CZ over it any day. In case of zombies I'll take the CZ.
-chris