Your choice really depends on your speakers, but I can't imagine any bookshelf type surround speaker ever needing 200W. I would get 7100 with less power and more channels. Even if you don't think you will go 7.1 you never know when that upgrade bug might get you. In the mean time, you can use the extra 2 channels of 7100 to biamp the front speakers if they are floor standers that can be biamped.