While I like TGM, I find that the site is not updated with new attractions as well as it could be. There may be a report about something new (Toy Story Mania, for example), but that will not have worked its way down to the sample touring plans or even the general descriptions of the park, and then there may be some other post that suggests how to integrate the new attraction into your plan. It's all rather scattered, and I think it could do with a major overhaul.
THAT SAID, it's nothing that I haven't been able to figure out myself. I think TGM does a better job than the UG of factoring in Fastpasses to the touring plans. But I think the UG is more comprehensive, and the geek in me likes the time-and-motion studies that underlie their suggested tours.