I'm not an expert, and there are far better qualified people out there to answer this. So take this solely as a personal opinion.
Truthfully, bcm and dd are the 2 factory rifles I trust most. My personal rifle is a f1 (not the skeletonized) with a bcm bcg, and b.a. barrel/ gas system.
In the $400-500 range, you could good find rifles. My favorite plinker is mix of PSA, anderson parts with a p.o.f. trigger and b.r.o buffer system. It has about 2-3k rounds and has about a 2.5 moa capability. It does great, but gets temperamental after about 250-300 rounds in an outing. Nothing major, just nuisances. Wont lock open last round, mags need a little love to seat properly, groups open up. Little things that are easily remedied, and they only pop up a little bit.
S&w mp sport 2 would be my choice. Sample sizes of one dont mean much, but I have heard solid results from mp owners over other brands.