Time has almost arrived for a change of sub. I've been happy with my REL Q400E, but once the living room is redecorated I'll have the room for a single large sub. So its either gonna be the ultra box or the ultra cylinder. Apart from looks is there any performance gain in the box over the cylinder or is the extra cost going towards the look and quality of finish. I think I would prefer the smaller foorprint of the cylinder but as I say this is the last change of sub for many years and want to get it right.