I have a Sundown 1500d. I have a Tohoe truck and plenty of space to work with, w/h the third row being out.My question is what would be the best SQL Sub set up for this amp for a daily driver.(Im looking to shake the ground if I can. lol)I'd like to spend no more than $600 on the sub/s if possible I was thinking a pair of 15" FI-SSD's or Q's ported which would produce more bass? Is there anything else that compares thats worth spending the extra dollars?