I'm looking to get a used 12" that I will put in a custom ported enclosure designed for it. SQ and lows are my main concern. 1000-1500 RMS. My seat folds down in my malibu so loudness shouldnt be a problem, I'm really not trying to damage my hearing anymore. I have my eye on a few currently an ascendant audio havoc http://www.ebay.com/itm/Ascendant-Audio-Havoc-12-Subwoofer-Dual-2ohm-voice-coils -1250W-RMS-USED-NR-/140944235461 and an lms-r http://www.caraudio.com/forums/subwoofer-classifieds/568316-tc-sounds-lms-r-2-a. html Which is better to go with and if you have another option feel free. Past setups werent really loud enough tbh, old version icon, old version idmaxv3. So definately looking to add a little more power than those provided.