I have seen a few 60cSx types for around 200.00. You could not go wrong with one of those. Time tested and proven.
I'd really rather not cache, but I am helpless in the grip of my compulsion!
The price of the 60CSx will drop because the replacement is coming out. That's the Map 62CSx. It is going to be like the older 60CSx with paperless caching too.