I think the Qs8's do a very very good job with music. I have many music DVD's that are in DTS 5.1 or DD 5.1 and they sound unbelievable. I actually have 4 Qs8's, and use the PLIIx mode to get all 7 speakers a rockin, I am very happy.
I have listened to only one DVD-A disk that a friend brought over once, and it also sounded fabulous. There are lots of people that say you have to have direct radiating bookshelf speakers for left/right or rears for music. So far I have not intensions of changing.
ps: for movies there is nothing better than the Q's...