I really like my level 4 12". I've been through a lot of subs and the dc has probably left the best impression on me. It sounds great and has great output when I need it and I don't even have it tuned as low as I maybe should. Only negative I can speak of is that the tinsel leads were snapped when I got the sub(bought it used of course) and when I was researching a fix for the tinsel lead problem I found several other people who had run into the same tinsel lead issue. I fixed the tinsels myself for about ten bucks and havent had a problem since. Sub is still one of my favorites. I have heard a few stories of people claiming inferior customer service from DC but it seems like the biggest issue wasn't the service they received but rather how long it took to get a hold of somebody to obtain that service. I emailed them about a recone and a response came in 2-3 days which in my opinion is acceptable.