I'm currently using Aperion bookshelves with a 10" sub and am considering replacing the bookshelves and sub and going with towers. I live in an apartment and will probably be living like this way for some time, so I don't get to use the full benefits of having the sub. I really liked the tightness of the 8" sub that I initially auditioned but I kind of got greedy about the possible power and extension of the 10" so I went with that, but like I said, because of the apartment situation, I can't really crank it up anywhere near where I had calibrated that it should be.
I guess my question is if there is any real soundstage or tone difference between the towers and bookshelves? Is there any true difference in sound quality, or is it just that the towers have built in subs? What can I expect in bass performance going from the 10" sub to two 8" subs in the towers? I suppose I could always KEEP the 10" sub in addition to the towers, but then I would be destroying small villages with my bass incursions.