Rating: 5 / 5
Maybe a bit hefty for all you die-hard BPL folks (at 5.4 oz), but full-featured, and filled with more maps than you can shake a homemade-hiking pole at.
The best thing about the unit (but also potentially its downfall on long trips) is its rechargable li-ion battery. As a former owner of the Magellan Map 330 (which ate AA's like nothing else), I can attest to the idea that it's very nice to have freedom from carrying batteries. But I don't know that you'd want to hike the AT or the PCT with this thing, since you'd have to find some way to charge it, or to resist using it.
Resisting using the '600 (as I have affectionately begun to call it) is hard. Its color display is amazing - its memory capacity is as far as I know - without limit with added securedigital RAM card (sold separately).
Some people like a Garmin, or a Brunton. I like a Magellan. These are rugged units, the software is awesome, and the mapping is very good.