I have the etrex Vista HCx. Two words: Buy it.
It does everything folks are saying. I like compact, simple units that work in various conditions. This one has it all.
I bought it this year and this is my fourth GPS. So I am not an expert but have used other models, all on multiple trips where canopes, clouds, and sides of mountains can give you fits. This one performed great. My buddy also borrowed it for trip to ID - same response. He went out and bought one.
Don't get me wrong - nothing is perfect. But this one is leaps and bounds ahead of everything in its class -- meaning -- small, simple, fast acquisition, not too many bells and whistles that you won't use, light, fits in any pocket so you don't have to dig it out, not $500 so if you lose it or just want a new... etc.