Just my experience, at one time I had a Rockford p3 12, the older style not new one, on an old Rockford punch 601s, built the box Rockford recommended for a t1 12 and it did pretty damn good, everyone swore it was 2 12s or 1 15, that was about 7 years ago so the equipment is better now. Just a suggestion, all the other companies you named have great subs and amps too!