I have a Garmin GPS-V. It works great for me.

I use it in the car, on the boat, on my motorcycle, and use it handheld for Geocaching.

The one thing I don't like about it is that it only holds 19mb of detailed maps so I have to reload each time I drive in a different direction.

On the boat it works perfect.

I made a bracket for it for the boat that doesn't shake.

They don't make them anymore but you can find them on ebay for cheep.

Hey CF I have a Lowrance handheld I've used for 5-6 yrs, I've used this one to go 45mi off shore from Oregon Inlet and that's all I used for most of those years. It never failed me and I still have it as a back-up.