Your girlfriend is getting you a Zumo for the bike? Why haven't you married her yet? ;D
I have the Nuvi 260 in my car. Best money I ever spent. I use it on the bike from time to time but don't have it hard mounted. I stick it in my tank bag under the map flap. Works pretty well. I've owned a Garmin V for a number of years but compared to the new technology it's back in the stone age. Even at that, it will still get me home. I think Garmin is pretty much the standard by which others are measured. I haven't played with the Zumo but if it's anything like the 260 it's well worth the money.
I have the Nuvi 260 in my car. Best money I ever spent. I use it on the bike from time to time but don't have it hard mounted. I stick it in my tank bag under the map flap. Works pretty well. I've owned a Garmin V for a number of years but compared to the new technology it's back in the stone age. Even at that, it will still get me home. I think Garmin is pretty much the standard by which others are measured. I haven't played with the Zumo but if it's anything like the 260 it's well worth the money.