You will be happy with either one.
If I had a choice I would have picked an uncorveted Saiga for even less money (if they were being imported), and converted it myself. I like it more than either Yugo or Mak90.
I know many people dismiss a need for chrome-lined barrel and chamber, unless you shoot corrosive ammo.
I grew up around AKs, and CL is not just about corrosive ammo. It is about keeping your chamber as smooth and hard as it can be, so thousands of rounds later, lacquer from ammo does not become a problem and empty cases stick in the chamber of the gun.
For a truck gun, where moisture can condense in the gun from wet boots, AC and temperature swings chrome lining is also important.
^^^Listen to this man, he speaks the TRUTH!^^^