I purchased a Garmin Edge Explorer and I must say that it was the biggest mistake I did.
This is a terrible Navigation device. It is very complicated to use and the bike tour maps are absolutely useless. When you plan a route the navigator navigates you through the main streets where the normal traffic runs, almost all the time and very seldom through the green bike roads. The user manual which comes along with it is also completly useless. I bot the Garmin Edge Explorer thinking that Garmin are world leaders in navigation but I was really dissapointed for having thought so.
TR