Summary: The Garmin products are wonderfull, and the Street Pilot is a wonder choice for the motorcycle. The maps are far superior to other GPS, the screen colors and layout is wonderful. The only problem with Garmin, is their customer service. It is by far the the worse i've ever seen. By purchasing a Garmin here on Ebay or from any other 2nd hand party you run the risk of the unit being registered with another user or being stolen.
Summary: The newer units come with bluetooth, I think with a large number of states going to "no phone calls when driving" this is a great alternitive. This one does not but it's big brother 2820 does, I guess I should have waited for the price to come down, I'm not complaining about the 2730. The GPS worked just fine, great price and value, I don't think you can go wrong with almost anything from Garmin, they just have a handle on "GPSing", my spin on it.
Summary: The Garmin Street Pilot 2730 replaced my Street Pilot 2620 which I sold to my Brother-in-Law for his sales job. BTW, he LOVES the 2620 as I did. The readily apparent improvements that the 2730 has over the 2620 is the audio interface. FM output is marginal in the big cities (Houston), but the headphone jack going to an adapter for either line in, or tape deck adapter, do quite well.