ok so i had made my mind up to go with four 1012s in 8 cu. ft. slot ported tuned to 40 hz but i hooked up my w3s in one side of the box and really dont like the way they sound. Is this just because JLs arent optimized for that type of box? Either way if i dont get 4 12s, i have 2500 RMS at 1 ohm to work with and i really want to do 15s now. ive been thinkign about these choices as an alternative:: 1 BTL 18 fully loaded 1 BTL 15 fully loaded 2 Q 15s 2 SX 15s Audioque?? not sure which model 2 DD 2515 I am very open to suggestions for 12s as well and i am trying to stay around a 600 dollar sub budget. Let me know what you think