Just what it says. I am collecting opinions on the best SQ sub. I currently own an iDQ10v2 and looking to possibly blend a little better and get a little more upfront bass. I have a small enclosure requirement with a max enclosure size of less then 1 cu ft and only 1 sub. Thanks in advance for all your thoughts and opinions.

My system currently consists of:
Pioneer P9 Combo
Dynaudio MD130 Tweeters
Dynaudio Esotar2 430 Midrange
Dynaudio MW182 Midbass
Image Dynamics iDQ10v2 Subwoofer