After doing a bit of a search can't seem to locate any lowdown on this on MCM.. Any one have any suggestions for most detailed road atlas for China, particularly for the west i.e. Yunnan, Sichuan, Qinghai, Gansu and XJ?

I've dropped into a couple of bookstores, including XinHua, and looks like there's a lot out there, so wandering if anyone has any personal experience on what's good?