I like Aguila, a Mexican brand. Have used in several calibers and several different guns, no problems.
Wolf and Brown Bear are Russian, steel-cased. I tend to use Russian in guns that I feel were designed for it, i.e. Makarov calibers or AK/SKS. The few times I have tried in other pistols it hasn't caused problems, although it is dirty. I just am always concerned about the extra wear from the steel cases, I suppose from all I've read about how Wolf damages ARs.
Wolf Gold is brass cased, I think mostly by Prvi Partizan from the former Yugoslavia. It's good, but not as cheap as regular Wolf.
I will never again buy the Herters ammo from Cabelas after I got a .380 squib load that I didn't notice in my LCP. Fortunately it lodged close enough to the chamber to keep the gun from going into battery and blowing up. Also VERY harsh recoil. The Herters brand is sourced from different factories for different calibers, but my VERY bad, dangerous experience causes me to avoid it altogether.
Mike 38, what pistol did you run your Wolf in? Any wear issues?