I'm looking at getting some new subs, and I have a good budget, but I want to know what subs are the best as far as power, sound, price, and space. Right now, I've been looking at the JL Audio 13W7 (1), Kicker Solo X s10x (2) and s18x (1), Pioneer Premier TS-W5000SPL (2), and Hifonics Goliath XX2412 (2) and XX3212 (2). I'm looking to spend around $1500 total on the subs, hopefully less. Any comments on the ones listed and suggestions for other subs to consider, I'd appreciate it. Thanks