When I first read a review of this product online, I was quite impressed...finally, an iPod mount that would work. When I received it and put it together, I was disappointed.
Allow me to elaborate...Griffin has a good idea here; instead of a goose-neck, it uses a ball-and-socket joint-type system of arms to position your iPod touch/iPhone. The problem here is that you have a limited amount of positions to put your iPod in.
Second, the suction cup is not as strong as it needs to be; it's a good idea on paper (instead of a snap-down toggle like most mounts, it's a screw-down type that should hold the suction cup more securely to the windshield), but the suction cup is very difficult to get to stick to the windshield, and you have to really press hard against it while screwing it down, and even then it would detach from my windshield at the worst possible moment (driving down the Garden State Parkway at 70 miles an hour).
Third, it will not work with iPods/iPhones in cases...I don't want to have to remove my iTouch from its case every time I want to take it on the road.
Griffin has a decent product here that just has a few problems that prevent it from being a great one. If they address the suction-cup issue, and make a mount that allows for holding an iPod in a case, this would be a much better product.