personally i would get floor standing speakers, i currantly have a set of Energy Take 5.1 system.. dont get me wrong... i love it, i use it for movies, music, and 5.1 A-DVDs
but ive found there are limits to the small satilites... i dont evan know how the stack up to a bookshelf either...
but i am going floorstanding next for sure... just for the vast range.... and it would be nice to have a floorstander with a unpowerd woofer in it, some music i dont really like the boomy bass....
good luck with what ever you do..