You seem preoccupied with reviews of these subs. I assume you went and listened to the Yamahah before purchasing

? If not, you really should have though I understand this is sometimes impractical. However, reviews are still just a guideline and you should decide whether or not the Yamahah is good by testing it yourself. Have you already got it? If so, do you have any major problems with it? Going on reputation alone, the REL probably would have been a better buy but I can't really comment because I haven't heard either sub in action.
Perhaps someone else will be better able to comment on the Yamahah sub

.
__________________