I hooked my 807 for Audyssey Wide last night. (L,R,C,SL,SR,WL,WR,LFE) The only problem I have for now is that the Wides are the Focal brand, and the front and surround are Energy. After running Audyssey, the sound is closer except for voices. If the voice isn't center channel, I can tell that their is a bit of mismatch in the speakers, but when I'm running TruHD or DTS Master with effects and music, WOW. I love the new setup. The detail, soundfield and experience are nicely enhanced. This effect is above and beyond having the extra and more expensive and accurate Focal at the wide position. For instance, I was just watching a Blu-ray with this setup and while the effects were definitely left and right, the orchestra stretched from wall to wall quite beyond the L/R I've heard before.
Because of my setup, I'll probably not try Height, but I think I'll try to better match the Wide speakers.