Has anybody out there in audio/video land heard or own the Acoustic Energy Aesprit 308 sub? If so how does it perform? Does it go low? It got a very good write-up by Hi-fi Choice and I was considering putting it on my shortlist. Are there any other subs in the £400-800 range that I should be considering? e.g the Rel's, Velodyne's.. If so which one's. Appreciate your help Chaps/Chappettes..