Thanks for the info -
I came across
www.gpsinformation.net, which has LOTS of info and links. I'm starting to sway to the GPSMAP 76S, which has more memory (24MB vs 8MB) and a couple of other things for about $25 more, typically. I suspect that unless I'm really disappointed in how it works, I'll probably end up using GPS+laptop+Streets & Trips in any city environment. Most of my use would be outside of a city, I suspect, but that's good to know, anyway.
Thanks again.