I actually own deadfalls, it seemed great but one of the things that put me off was that the framerate was poor and screen tearing was all over the place on the 360. Considering this is an UE3 game I think (and UE3 games in particular perform pretty well in the backwards compatibility program) I'm hoping this will be a better game to return to and one that i can complete.
NiGHTs is great because I've been collecting sega games over the years and I've never played it outside of a brief xbla trial. The fans really love this game, and eager to play this especially after recently getting all achievements for sega medadrive collection + with how disappointing the sega forever initiative has been.