IM GETTING READY TO BUY A SUB. IM LOOKING AT EITHER A SINGLE 12 OR 15". I WANT A PRETTY GOOD BLEND OF SQ AND SPL. A SUB THAT PROVIDES DEEP RICH BASS AND CAN ALSO GET LOUD. I WAS THINKING OF MAYBE A KICKER L5, AUDIOBAHN HIGH EXCURSION, INFINITY PERFECT, OR A PUNCH HX2. WHATS THE BEST OF THESE 4 FOR DEEP RICH BASS? THE SUB WILL PROBABLY RUN OFF OF A JBL 600.1. ALSO WHAT WEB SITE HAS THE CHEAPEST PRICES?