May I ask a related question please? I'm planning a tour of the Pacific Coast from N. Oregon to San Francisco, mid August to early September. A little way off, but I'm shopping for camping equipment this weekend. What would be a sensible "comfort" rating for temperature? I don't want to spend $$$ on down if not necessary, and the lighter weight/more compact the better. I've seen this Mountain Hardwear bag rated at 45 degrees F, and only 760g / 14x28cm pack size. How's that?

Future use will most probably be further touring/camping in generally pleasant climes.