I have owned both. However, I'm thinking that both are too large for a bedroom system, especially with the high quality monitors both manufacturers make. The Adagio juniors are fantastic and offer the same sound as the adagio's. The m126bes paired with a good 8"sub will be more than enough for a bedroom system.
However, if you set on the floor standards, I would probably go with the adagio's as they present better my opinion