Formula 220mm has been great for past 3 years
We've been using the Formula 220mm rotor, BB7 (road) and EBC gold pads on our '97 Santana ... and there's plenty of chain stay clearance for a larger rotor.
It's been used (and abused) on extended descents down Independence, Monarch, Cottonwood, Rabbit Ears, Freemont, Vail, and Tennessee passes in Colorado, as well as Mt Evans. Some front range descents are considerably steeper, but shorter, and we haven't experienced fade.
FYI, we are a 280# team and EBC pads last about a year.