Looks like the Garmin folk in the U.S. forwarded my queries to their offices in Taiwan. I rec'd an email from them saying that they could assist me and asking me which models of Garmin devices I have and their respective serial numbers.

I've going to send them the info for my Nuvi 500 and GPSMap 60csx and see if I can get them to guarantee the accuracy of the map before I lay down the cash.

I haven't decided which one I'll bring to China with me on this next trip. I'm leaning toward the 60csx as even though it has a smaller screen and is difficult to use with gloved hands, I find its simpler display easier to read at a glance while riding. The Nuvi is great, but the shaded relief and contour lines make the interface much busier.

I'll update this post after I hear back from them.

Cheers,

Dan K.