Okay, I'm trying to ask this in a general way, although I do have particular brands and speakers in mind. I'm not referring to the Home Theather in-a-box setup with the receiver and/or dvd player plus 5 speakers and a dinky subwoofer- I mean like the Polk RM6200, 6600, or Infinity HTS20 (which I am thinking about) speaker systems which include four satellites, a center, and even a powered sub. I'm wondering how these kinds of systems stack up when compared to a bookshelf speaker, say something like a Polk RT10 or models in the same size (4"-6.5" drivers) and price range to keep the total price around the $500-1000 mark of the boxed speaker systems. Do bookshelfs have the advantage outright with the larger cabinet or even a rectangular design compared to the smaller systems that stuff a tweeter and 3-4" driver in a space smaller than a kleenex box? I wonder things like do the dinky speakers start to roll off around 200Hz or even higher, leaving a frequency gap I'd rather not have, and don't want to make a sub do. I'm sure most good small speakers sound better than most bad big speakers, but I'm wondering about good systems vs. good bookshelfs. The other consideration in comparing these was that so far, I've yet to find a packaged speaker system with anything other than 5 speakers. The Infinity HTS20 was the only odd one out, since additional speakers could be purchased in pairs for going to a 6.1/7.1 channel setup. thoughts, opinions, facts?