I was wondering if i should go with 2 12 RE xx.x and a hifonics colossus amp or just a RE 15 MT with the same amp. OR would it be better to go with 2 RE xx.x 12 subs and have one amp to each sub. in this case would the hifonics bx1500d 1500 watt amp work. What subs and and amps would you suggest.