Marty (or anyone else),
The last time I used GPS very much was a military unit (Magellan, IIRC) that was only charitably called termed a handheld unit.. 92-93 on another continent. So my hands-on experience is pretty irrelevant today.
Based on your experience, would you make three suggestions on make and model, constrained as follows:
1. Battery life
2. Color display big enough to use.
3. Expandable memory very desirable (I like SD/MMC best, followed by CF)
4. Cheapest ranging up to Cost not to exceed $600 (modify this if it's pie in the sky)
Ummm - modify the constraints if some of them don't fit together. I'll look 'em up, so you don't have to include links if that's a hassle.
TIA,
Tom
PS - I'm NOT giving up my paper maps and compass for navigation - but there are some things I want to do that I could practically do easier (and maybe better) with an appropriate handheld GPS unit.