Thanks Muirenn. No cadence sensor on the Madone, but I did have one when I was in college/grad school, oh, say 20 years ago (crap, has it been that long? When did I get old?). Anyway, mostly what I learned was to spin faster than I think I should. I haven't been doing intervals, but I have been riding hills. We have short very steep hills and longer kinda steep with very steep interval hills in this neck of the woods. I'm hoping my compact will see me through them, especially since I'm coming from a '94 Trek 1100 with a triple.