I have a 76CSx w/ 512 MB transflash (microSD) loaded with Topo, City Navagator and Bluecharts for most of the northeast. Works great both on and off road (and on the water). The new Sirf chipset is incredible at picking up signals in dense forrest, and will give reasonable location accuracy in those conditions. I would highly recommend it to anyone.

FYI. The 60CSx has the same guts as the 76CSx in a different form factor.

-Jeff