Originally Posted by marco polo
As for voice prompts, I don't use sound on the bike, so the screen is very important to me.
If I may, I would strongly recommend you do use the sound features. It allows you to focus your attention on the road, and you will rarely have to look at the display - except when you really need to.
Regarding my personal decision process, I wanted to be able to use the unit no matter where I went, on the bike or in the cage, or even by plane. I pop it into rental cars when I go back east with my family or on business trips. Having all the maps, and all the data there, all the time is valuable to me.
Everyone has to make their own decision, and either of these are excellent GPS devices.