Thanks everyone for the replies and advice. We went out and bought a Nuvi 260W and have been playing with it for the last couple of days. Works great! Yes, it did take us to an area one street away once, but it got us close and thats all I ask. Now all I have to do is get the thing to display all the caches I have loaded. Time and playing with it using GSAK to do the load will probably solve this. I have only loaded a .gpx file directly to it without going through GSAK so far and even that seems to work.
The real test will be out west in approximately 32 days!
Burgi Dad