Since I read through Spirit of the Century, I want to run everything in FATE.
I expect this is largely because it is new and shiny (to me). Perhaps it is heightened by the fact that what FATE seems to do extraordinarily well is the stuff that I feel was left out of 4e D&D.
Still, it seems like an incredibly flexible engine. Initially, I was concerned that combat might be a bit oversimplified (and I'm still a wee bit worried about how to interpret consequences), but environmental Aspects and Aspect-imposition seem like they'd naturally generate some really dynamic fight scenes. Like Exalted, to be most effective in combat you need to interact with your environment and take advantage of individual circumstances. Unlike Exalted, this is built in to the core system rather than tacked on as a "stunt" subsystem that doesn't always get consistently implemented.