The Aero Precision AR15 A2 Birdcage Flash Hider is a good place to start. While it won't outright beat out any specialized muzzle device at any particular job, it's a design that's been proven with time as a jack of all trades. It helps hide your flash. It mitigates enough recoil for you to control your aim. It reduces muzzle rise enough for you to keep your aim level. All around, it's a solid muzzle device, and that's why it's been the standard, the mil-spec design for so many years.