I have graduation coming up soon, and I want to get a really really REALLY good rifle. It needs to be extremely reliable, semi-auto, ergonomic, have a nice profile. Must fire .223/5.55X45mm NATO. What I had in mind: FN SCAR 16s FN Fs2000 Bushmaster ACR H&K SL8 Steyr AUG Customize an AR-15 I already have Something else of the like, that you recommend. Which one would you pick, and why? Would you avoid any of these, and why? I appreciate the help.