I don't think it is worth if you only listen to DVD video(source resolution not good enough). I listen mostly to DVD-A and SACD and only in 7.1 (Lexicon MC12). It is very important to have very similar speakers and amps all around. My system consists of Revel Studios, driven by Rowland Model 9's through ML #32 in SSP mode, Revel Voice, driven by ML 436, 4 x Revel embraces driven by ML 432's, and Revel Sub 30. Worth the investment!
7.1 vs 5.1
Finally added the Aerial SR-3's to my home theater and have achieved 5.0 at this point. I built the room for 7.1 or 7.2 capability. Any comments from those that have made the jump. Is the experience of a rear pair of speakers significant? (BTW, the room is 32'x15'x8.5' with the side speakers at about the 20' mark.)