Sellier & Bellot is good stuff. I've fired 400 rounds, not a single FTF, and the brass all looks good. It runs $11-$15 for a box of 50 here in NW AR. Winchester is the same thing thing as S&B, made in the same factory from my understanding. This ammo is non-corrosive.
Makarov.com has some 7.62Tok hollowpoints, but I've not fired any, so I can't vouch for them.
Be careful with surplus ammo. By definition, it isn't reliable, but some of it is dangerous. The CZ52 is a well designed pistol, and can take a reasonable amount of abuse, but some of the surplus - Romanian from what I hear - is actually for a submachine gun, and is quite a bit hotter than standard. Expect a second strike every other magazine or so in my experience with surplus.