HB,
Like you I have found using a GPS a godsend. I still draw lines on the map etc but where it is so good is distance/time to next waypoint. This is soooo useful when calling positions to airfields, flight info services etc. When London Info (for example) ask you your current position you can be really smug and tell them so accurately!
With experience you'll probably change the settings a few times for what is displayed on each page to suit your method of navigation and R/T calls.
Just remember to keep the batteries charged up and keep a spare set of AA's in your flight bag!
