Other than the gps in my boat, wich I purchased recently. I have no experience with them. I've got the bug now and would like one for longer trips on the bike, and found the TomTom Rider 2 is in my price range and seems to come with everything I will need. To start off I'll only be using it to navigate from A to B and detour the slab. Probably be a while before I sit down and build/load a route, maybe never. I just wonder what you guys think of these units and if their is anything else I should be consindering... I'm trying to stay around 300 bucks.