The VG6 Epsilon=Best bang for the buck under $100 IMO. I got mine for $40 shipped the other day and tested it. It's definitely going to live on my favorite rifle from now on. I've used alot of 2-chamber brakes and the Epsilon works as well but with flash reduction it's awesome.Get the VG6 Epsilon. They were on sale for like 35$ the other day.
Comp, brake, and flash hider.
I have a SI Checkmate on a pretty light 14.5" gun, and a PWS FSC 556 on a heavy 18" it might not be the muzzle device, but that 14.5 is one of the softest shooting ARs I have ever felt. Apparently loud.