i am not to smart on subwoofers and stuff...but most local shops will talk down on dc because they are not as widely available like most major brands..in example: kicker,piooner(sp),xplod,mtx, etc.. you have to keep in mind dc does not have as large of a dealer base as all those other companies that have been around for sooo long.. and mainly dc subs as far as i know are more commonly found on forums, or word of mouth.... dont get me wrong.. i would like to own a dc sub.. but bottom line is not a lot of people have heard or messed with dc subs.