For the last 4 months I've been doing some test on a couple of 15" drivers and I still have some of these: RE MT, FI BTL Fully Loaded, DD9515 "F", RE Destroyer, Modded TC3hp, Regular TC3000, 2 diferents TC Neo motors with a couple of TC's Assys. So far my favorite daily is the 4HP with the Eclipse Ti Pro Assy. On set up in my sig and tests in 2 different boxes both 3.3cf @33hz due to the fact that when I build the final box for both 15's I'll be getting only around 7.2cf after displacement. Destroyer is not a joke, but I like the lows better on my 4hp //content.invisioncic.com/y282845/emoticons/yumyum.gif.0556df42231b304b9c995aefd13928a8.gifChris