Hmmmm.....here's something that I didn't know until now.
Looking through the specs, the R550 series does not claim to support "simulview" (basically the Sony version of "Dual Play"), which allows for two gamers to each see their own screen at the same time. It's seems like an increasingly big deal in the gaming world: if supported, in 2 player games each player gets a full screen (albeit 1920x540) that the other cannot see.
It IS supported in the W802 line. Reading through reviews of other TV's, this seems fairly important these days. As a gamer's potential deal-breaker, this might push some of you over to the 802.
That would be a bit of a drag, because even though the R550 is "bottom-end" for Sony, it's still one expensive TV.
"By Grabthar's hammer, by the suns of Warvan, you shall be avenged!"