At risk of repetition, the BV11, in my case, has freed up a lot of space in comparison with a BV5 on a two drawer stand. The BV5, with our particular room layout, had to be partially across a corner, and the drawer unit pushed it even further into the room. The BV11 on a wall hinge looks really elegant and has freed-up floor space.
As I mentioned elsewhere there are still some software issues with the BV11 being resolved linked to movement to audio and tv stand positions from standby. Also, the radio static screen information that is meant to automatically screen mute after a minute or two sometimes comes back on and stays on depending on which buttons you have touched (now resolved for volume controls). In relation to this I was concerned about screen burn, but my dealer tells me that screen burn is not an issue at all with the BV11, unlike plasma.
The BV11 has very deep black backgrounds, in my opinion possibly blacker than the BV5.
The BV5 and 9's are TV's with a great physical presence when turned off. The BV11 is a picture on the wall. Not an easy choice, but I've still got my SD BV5 giving great service in another room and have no regrets about getting the BV11.
Graham