The 818 at a likely <$1k street price will be a huge hit. XT32 was previously reserved for $1.5k+ hardware, with the Denon 4311 being the cheapest option. I'm looking for the cheapest point of entry for XT32, with most other specs/features being irrelevant (I use outboard amps, let my displays/sources do the video scaling, use standalone devices for streaming, etc).
If there was a standalone Audyssey XT32 box for cheap, I'd buy that. The 818 seems like the next best thing though.