Join Date: May 2007
Location: University of Memphis
How much are you looking to spend? Do you want maps? Color screen?
If you just wanted to mark some locations, the cheapest <$100 GPS would be fine for you. It would be black and white, not have maps, and it would easily fit into your pocket and do exactly what you wanted. On eBay, you could find such a device for probably $50 or less.
On the other hand, if you want fancy features like color screen, expandable memory, maps, autorouting.... then you can spend many hundreds of dollars.
In general, I would look at the Garmin eTrex units, going back to the basic Yellow if you wanted cheap. The newer eTrex line, while somewhat resembling the old models, really are totally different GPSs, and are much more expensive, too.
The Garmin GPSMap series (60, 60c, 60cs, 60csx, 60cx, 76, 76c, etc) are very popular and the x-series have much better satellite reception. The newer models have expandable memory, autorouting, color screen, and are rugged.
Magellan's strong point has always been satellite reception. The standard by has always been the Meridian line. It's an out-of date series, but still good. Rugged, some good features, cheap. (I own a Meridian Gold) Magellan suffers from awful customer service.
I would specifically not recommend the Quest, as mentioned above. It will do what you want, but it is a model targeted for automotive use. Its battery can only be recharged in the cradle, the flip-up antenna is susceptible to breaking if you drop it, and it's not ergonomically designed for hand-held use.