I would recommend starting with Brown Bear, if you can find it. I recall seeing a survey where more people had issues with Wolf and Silver Bear than Brown Bear.
I've been picking up Tula from walmart pretty cheap. Just wanted to try all the flavors of steel before I go and order a case to find out it doesn't cycle.
I'm not picky at all about clearing malfunctions from rifles because of cheap ammo, kind of fun to see where it fails and fix it...I just don't want to have to do a malfunction clear every other round with a whole crate worth of ammo lol.
I do see brown bear getting descent marks, wish I knew if any of the IP's carried it.