get JL audio gear
i have it and love it. i got entry level 12W0-4 sub + e1200 amp. only 125WRMS but sounds beautiful and pounds hard too. if u can find a cheap one i would DEFINTELY recomend the JL 3v2 with a 250-300 watt amp "e1400D"
RMS is not necaserly everything
but ur best bet go to an audio store listen to and listen to a few...like most things in this world u get wat u pay for