The VZ58 is a nice firearm.
The pros are:
* it's a light gun, lighter than most AK's
* safety lever is much easier to use than the AK
* seems to be more ergonomic than the Standard AK
Ths cons are:
* proprietary, and expensive magazines (no cheap surplus ones)
* zero aftermarket support ;good luck finding accessories and upgrades
* discontinued ( production has discontinued on these rifles which means it will be even added to find replacement parts )
I'm sure there are more pros & cons but these are the ones I can think of off the top of my head.
While it is a nice firearm worthy of being in any collection, I personally don't believe it's necessarily better than an AK.
AK's are and have been built in dozens of countries around the world. Finding replacement parts, upgrades and accessories is easy.
The design has been adopted by many countries for a reason. The guns just work. Even in its cheapest crudest form, the AK is reliable.
Once you start to spend a little more on a higher quality AK, you start to get excellent accuracy as well. ( I personally own AK's that will give me 1 to 2 moa accuracy. While that is not sub moa performance, it is incredible when you consider the fact that I can do that with almost any cheap ammunition that I can find.
I've never tried match ammo or expensive hornady custom ammo.
Ultimately whichever you decide is right for you is the one you'll buy but these are my observations and opinions.
Good luck.