I am a field biologist and especially work with birds and need a good GPS for my field work. If you could recommend one economical one and one intermediately priced one, that would be great. Thanks in advance!
I am currently using a Garmin GPSMAP 64s. The advantage over the cheaper models is that it has inbuilt compass and works very well. Useful for getting aspect readings and also for navigating to marked waypoints. Especially useful in forest. I have also used garmin etrex 20, which is useful for generating GPS coordinates. Does a bit of what I mentioned for 64s, but the 64s does it much more efficiently.
Even if I know there are much better models of GPS, I continue to use my old Garmin eTrex Summit. It's very good especially for the altitude, as not all the GPS offer good resolution data about it.