I spent about 2 months searching for info on which GPS was the best to get....
in the end I went with the Gamin Quest. It mounts on the bikes easy enough
and has not given me any grief yet (1 year of lots of use).
I use it on my XR650R so I don't get lost down at Big Bend and on all the DS type
rides we do. The battery lasts for about 10 to 12 hours and it has 128 meg built in
memory. The expandable units cost quite a bit more, bit I have found that 128 is
more than enough. For example, I can store all detailed maps between Frisco, Texas
and St Pete's, Florida and there is still spare space, so more is not needed.
heres a pic of it on my XR :
