One more thought ... about the different brands out there.

I've only owned Garmin GPSs, except for a Delorme unit that works with a PC.

I tend to be a big fan of healthy competition between brands, since it tends to create better products, so I wish there was more competition between makers of GPSs, but from what I've read on-line Garmin's competitors are struggling to compete with them - except maybe to some extent the Delorme units.

Still, as they say, your mileage may vary.