Hay i think if you want to get the best get fi. Personally i have a 15 btl fully loaded for the daily use in a custom box with a hifonics colossus amp at about 3/4 gain a pioneer premier deh-p600ub deck and 4 infinity kapas in the doors in my 95 jeep grand cherokee. The sound quality is great and gets freaken loud to ive been to many comps for sq, db drag, and spl and won most all of them the sub is the best that ive ever had. so your best bet is fi weather its the btl or the bl a 12 or a 15 you wont be disapointed good luck on your search hope this helps
