Way back at the start of this thread there was some discussion about what model GPS to get. We're using a Lowrance iFinder Go and it's pretty good for the price ($70-$80). It has some built-in maps, not terribly detailed but ok for navigating to the general area.
We had to get it online--we looked in a bunch of stores, and for that price, you really couldn't get anything with built-in maps. GPS's that looked kind of equivalent were usually in the $130-150 range.
Note that all this is from about a year ago, so things could have changed.
I can't really talk authoritatively about the accuracy because I've never used any other GPS, but judging by the comments people make in geocaching forums, I think we're probably getting about as good accuracy as anyone else.
My only complaint would be that the user interface wasn't completely intuitive, but we're pretty used to it by now.
Of course I can't figure out TV remotes either, so take that with a grain of salt.