totally.

Mapsource is a really easy program to deal with. Uploading 18 mb of maps took about 45 minutes.

I still havn't gotten to all the features that the GPS V can do, although i probably wouldn't use them anyways.

BTW, for geocaching, i've found that putting the coordinates as a waypoint and using the "Off Road" feature makes it easier to narrow down the location of the cache.