I agree. The 305 is a poor choice for tours. The biggest problem being the fact that it needs to be recharged. I hear that the battery life is less than 12 hours. Even if you have a place to charge it, you have to remember to charge it. Then there is the fact that it does not do maps.

I would recommend the GpsMap 60 or the GpsMap 76. They are both just the right size for the bike. I own the 76, while it is really targeted toward marine navigation, I like the form factor better than the 60.