Best airsoft gun for $150?

I need some opinions for a new airsoft rifle. I'm experienced with pretty much everything from $11, plastic, mechanical USP 45's to $400 full scale, metal, AEG M16A4's. But right now I'm on a tight budget. I need some opinions for the best airsoft assault rifle for no more than $150. I'm not expecting anything amazing because I know most metals and replicas cost $200+. Also, if you could include links so I know where to buy.