I have Def Techs and they are fairly close to the wall, about 9-12 inches and sound great. However I have the BP2006TL's and I think the bigger models do sound better as they get further from the wall. This is what a friend of mine said who has the BP2000TL's said.
Definitive Technology is worth an audition. If your main purpose is movies then I strongly suggest these. Having powered subs within the speaker is a wonderful thing for movies, especially when the center channel has one too.