I used to use a Garmin 176c for Morocco, it is the same as the 276c but doesn't route which isnt a problem in Morocco. The 176 got trashed in our smash last year, there isn't a mark on it but, I guess the excessive shock/G force during our 'bump' and cartwheels destroyed the screen as it only shows horizontal lines now
I now have a JLT8404 tablet PC running Windows XP, Garmin Mapsource & Garmin NRoute mounted in a vehicle doc. This is linked up to a Garmin GPS Map60C which is similar to the GPS 60CSX. The beauty of this is I have a nice big screen to see a wider 'picture' of the treeain around the piste's.
Both are mounted to the passenger crab rail with Ram mounts.
I haven't tested it in anger yet but will be doing so later this year.