eclipse sw9122, sw9152, jl audio w7 or w6, re audio se, sx, xxx, treo ssx, adire brahma, lots of people say alpine type r. i would get either the eclipse sw9122 or 9152. you will shake the sh!t out of everyone and it will be clean. but, like everyone says, go to your local shop and listen to some.
William you do not want sql subs you want sq subs High Powered sq subs. you might as well start out with a SQ setup you will save a lot of money in the long run because if you like car audio sq is what you want. Baisicly IMO
SQ: = Nice clean bass solid lows Krisp kicks and punches. SPL: =Bass not always good unless you only listen to deep bass all the time. SQL: =A mix of SQ and SPL, can vary greatly from sub to sub.
I prefer SQ just really really loud.
FYI: listening to subs in a solid, usually airtight shop will not have the same aqoustical properties as 4.5 cu ft of airspace.