[davidr]

I've just been plating around with this unit and made the following observations:

60 CS (limited memory, Sirf II antenna, Built in Altimeter)

Road Navigation Features:
Optional Guidance text
20 Saved Track capability
including area calculation function
Routes function (ability to drive or walk pre-planned routes)
Route calculation, faster time, shortest distance or prompted
routing functions can be set to follow road or off road

Jump master function (for Skydiving):
Can set desired impact point, Drop Altitude, Forward throw, course to HARP and wind settings
Jump types: HAHO, HALO, Static

Geocaching:
Can set points for Geocaching

Additional feature of the S model:
Altimeter
Plotting of pressure over time (can be used to predict change in weather)
Ambient Pressure plot

Other:
Sun and moon location functions
Limited Hunting and fishing functions
Fishing day type, optimal fishing time for current location and selected locations, etc)
Limited Marine Functions:
Anchor Drag Alarm, Off Course Alarm, Deep Water Alarm, Shallow water alarm
Proximity functions for limited number of waypoints
fast reacting and accurate compass
Calendar
Alarm clock
Stopwatch
6 built in games:
(Memory Race, Vitua Maze, GekoSmak, Hibbons, Gekoids, Beast Hunt)

Pretty nice little unit, quite powerful and versatile, x model is SD card compatible and has Sirf III antenna