Garmin GPSMap 60 csx. I 've had it for about 5 years now and it has functioned in rainy days on my motorcycle, hiking, snowshoweing, and of course biking. I plan most of my routes on the PC or get them from ridewithgps.com, and then load them into the GPS unit. The one feature I think is important is that the unit use AA batteries. I can pick those up anywhere and not have to worry about charging some internal battery that some units use.