They are good for spl but you still use them as a daily beater and still produce good sq, and cody is so stupid jl don't blow easy unless you abuse it and jl just good for sq.
Yes the Rockford Fosgate T2's are amazing! You will need a big amp just to get them to flex at all. If you wire more than 1 or 2 and a big amp you better be careful or you will shatter your windows.