Buy a Garmin. I have had the same Garmin Zumo 450 for 10 years and kept it through 3 different bikes. It has seen rain, wind, heat, cold, been banged around and it has kept on going. If I ever buy another motorcycle gps it will be a Garmin.
2006 V2K Classic LT Black/Chrome
Lots of chrome goodies, sagebrush engine guard chaps for cold days in Manitoba, Rumble Road speakers, Garmin gps, tank bib, modified seat, Ohlins rear shock - best investment ever!!, locking saddlebags, Kuryakyn luggage, brake-away cruise control, and more stuff every year.