I have found 4.1 (no center) to be MUCH more enjoyable than 2.0 for movies. I have sold off my surround sound a few times and always regret it.
2-channel vs 3-channel/5channel
I have been enjoying some B&W N802s for movie watching in 2 channel. A real pleasure. My question is, will I gain a lot of enjoyment by going through the complication/pain of setting up 3.1/5.1 or is 2 channel "enough" for movies.