What are some tips when shopping for subs and amps?

for everyday music good subs are mtx, kicker, jl audio, alpine, rockford fosgate, memphis and hifonics. for competition b you might wanna get re audio, fi audio, dd audio, diamond audio, american b and focal. as far as the amps get amps that are cea-2006 compliant. that means the amp will put out the rms wattage it claims and even more. if the amp is a monoblock rated at 600w rms at 2 ohms no matter what brand it is it will put out 600w rms or more.