Which subwoofer brand should I get? Rockford, Kicker, or Alpine?

[Dan Z]

Im getting subs for my car and a amp, all i have is new rockford speakers and a new kenwook head unit, i know nothing about subs or amps, so please help. Everyone is tellin me different things, i guess more than anything i just care about the quality of the sound i will get over how hard it bumps so wat ever is the best please help