Is this a good unit for geochaching? If not, what is?

Question

Garmin eTrex Legend Mapping Handheld GPS w/ Garmin MapSource CDROM?

Answer 1

this one is much better.

Garmin eTrex Venture HC High-Intensity Color Mapping Handheld GPS.

Same company and similar price but more to it and a color screen.

Answer 2

If you're thinking of the blue Legend, go for the eTrex Venture HC.  It costs about the same and is much more modern.  It has more memory (24MB vs 8MB), it uses a USB cable instead of a serial cable, has a color screen, and has a higher sensitivity receiver than the Legend.