Can't go wrong with scorpion. Super reliable, I've changed a recoil spring and broke a hammer spring in 15 to 20k. Works with ammo of wide power factor variance. Mags are cheap, PSA makes a nice one with steel feed lips, under 20 bucks I think. The bad: stock trigger is heavy, a little work makes it decent, heavy bolt makes recoil noticeable (no worse than an untuned AR9).
I thought I wanted a Tavor in .223. Got to handle and fire one. Felt very awkward, very butt heavy. Maybe you'd get use to it. But a nice quality gun.