Avoid GLX but BRZ/BRX/BRE/ZRX are all good. And I'm pretty sure the Onyx has the same internals as those I mentioned just with a different heatsinkJust buy a newMbquart onyx 2000
Hifonics glx,zrx,brz 1800-2400
Ppi ice amps
Im sure there are a few others
Edit ^ beat me to it