I moved to OB's last year with zero regret. bass is fast dynamic and deep enough for me. each of my speakers has a 18" sub bass, 15" mid bass, 8" mid, 1.5" tweeters and a tinny supper tweeter.
I get bass in room down to 25-30hz, properly set up of course. to be honest i though bass was going to be the down side but its really the best part of the speakers. supper fast no boxy sound etc. If you've not tryed a good OB in a room that can support it, then its worth a listen. the key is a room large enough to get them out from the wall 4'-6' to get proper front and rear wave integration.