I just put the Zumo 660 on my bike a couple of weeks ago. Once I got it set the way I wanted, it was awesome. Took it to Gettysburg this past week.

Some benefits:
Wide screen - easy to read in both dark and light situations
Fast start-up and calculating
Waterproof (already been caught in the rain a few times)
MP3 player
Bluetooth

Bad news - Pretty damn expensive

 

I use a Nuvi 350 on my SG with a ram mount. Ran a direct wire to the aux switch so I could turn it on and off. Works great and no problems so far with vibration

 

I have been running the Zumo for a couple of years. I love the thing. You can route map in mapquest, click and drag your routes around and send the routes straight to the unit. The only problem that I had was the first unit that I had died in a month. Garmin sent me out another unit and it hasn't had any issues.

-T

 

I have the Streetpilot 2720 from Garmin. It works great and it's waterproof. 128 bux from www.megagps.com

 

Update: Just replaced the Nuvi 660 with the 760 so I could download routes from the HD ride planner. Works great.

 

I have the nuvi 760 so that I can use it on my bike or in the car.

 

I use a Nuvi 750 on bike and truck, works great

 

+ 1 for the Garmin Zumo 550.

 

I have a Garmin Etrex Vista. It's hand held that I use for hiking, for my snowmobile, golf and my RKC. I have a handle bar mount and it works fine. $215 It has a 2 gig memory garland I have maps in it for a up comingtrip from Upper MI south around Chicago to Sturgisand back.

 

Great.....thanks for the info