I just copied my reply from the other week and edited it slightly...
pretty much anything imported is fine, I'd stay away from
PSA, vska or pretty much anything American made since they tend to blow up a couple thousand rounds in. Also century imports are good to go, century manufactured have a 50/50 chance of running right. Best bet cost wise would be to sign up for Atlantic firearms email notifications and hop on it soon as you can, they get a few good starter rifles a week(wbp poland, zpap, random romanian parts kits builds, etc) in but sell out within about an hour probably less tbh.