this part i find troubling, here - i probably get 2-3 frames lag playing classic systems on my plasma + upsclaer and while that works for me on twitchy SHMUPs/fighters/rhythm games etc anywhere past that - say, PS1 discs on PS3 - pretty much breaks entries in those genres, whereas stuff like strategy, RPG's etc are perfectly fine.
did you try Resogun out of the house? maybe i'm asking too much, but while it's pretty neat indoors, if it introduces much more input lag than that, it's kind've a dealbreaker of an outside feature, for me. again, with respect to most genres, anyway. i'd be interested in details here.