What is the best GPS Handheld Unit on the market
today, based on these criteria:

I need a good combination of driver-oriented
features (e.g. road maps!) and hiking-oriented
features (e.g. water-resistance, light weight!).
My price limit is around $250, but somewhat flexible.

I don't have a lot of time to sift through links, so
please provide a recommendation (and maybe 1 or 2
runner-ups) based on other people's opinions (reviewers,
discussion group postings, etc).

Thanks

Try out the Lowrance Globalmap 100. I use mine for offshore sailing
but also get a lot of fun using it on country drives. It can be
factory fitted with a detailed map of your particular area and also
with the complete world but this lacks fine detail. Fully waterproof
and able to run off a cigarette lighter plug. Initial cost is a bit
higher than your requested $250 but a working secondhand unit is as
good as a new one. They all give your latitude/longtitude and its up
to you to relate this to any paper maps. The handheld Globalmap has
50% more info. storage than the benchtop Humminbird NS10, but also a
good unit. Knowing where you are is half the battle when lost or in
trouble. The other half is your two way radio to let your rescuers
know as well. Add an E.P.I.R.B. [Electronic Position Indicating Radio
Beacon] satellite tracking unit, and your well equipped. P.S. Two
young men died of exposure in the "outback" of Western Australia only
a hundred miles or so from help, simply because they had no knowledge
of rescue equipment available on the market. How much is your life
worth?