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I bought this thinking that it was better than the bean bag one, which my daughter has. This is very poorly designed. Where all the weight is cantilevered from at the base of the mount has no stability laterally. They put that at the front. So when you drive down a bumpy Michigan road, the GPS display is a blur due to the instability. For those technical, the lateral acceleration at the top of the GPS is about 10 times greater than at the base of the mount. Not good. I have the latest and greatest Garmin GPS that is probably one of the heavier ones, but you think they would have thought about this one a little. Get the bean bag one - much better. This will probably shorten the life of your GPS unit with all the vibrations.
What's great about it: Not so bulky
What's not so great: No lateral support - GPS becomes blurry from all the vibrations