good choice buddy. hmm... A ten would be slightly tighter, however how they make the box can change the tightness quite a lot (hahaha that sounded pretty sexual hey) Just look at mine compared to Micky C's. His actual box is smaller, only just noticably, and his bass is a lot tighter than mine is, but mine is much louder. Just ask them to keep the box as small as possible, tight boxes are always much better :P