After reading all the posts, I have come to realize that the Bose Acoustimass is not highly regarded, but after listening to a few minutes tonight, it really does not sound that bad. I have to upgrade the receiver because I only have a pro logic receiver, but I am thinking of upgrading more. Will a SVS subwoofer improve my sound dramatically, or should I go ahead and replace the fronts and get the SVS later. I am planning to do all but wondering where I should start to make the most noticable improvement. Your help is appreciated!