I bought a set last month and have been very pleased.  Nice bass and the satellites are fine also.  I had some inexpensive Altec 5.1s and the really annoying thing with those was the "control" speaker was the right front so it was basically out of reach.  Also, the Logitech's have longer cables but you may still want to look at getting extensions for the rear speakers and possibly the fronts as they aren't too long either, of course depending on placement.  I would call them a very good set of speakers for the money and was fairly impressed with the overall sound and construction quality, and I have pretty bad hearing too boot.