I got this because I wanted something that would hold both my mother's Note2 and my S3.
The holder itself is absolutely brilliant. It hold my mother's Note2 without a single problem, in both the vertical and horizontal view (thus meaning for my S3, I had no problems either and nor will it have problems with smaller phones).
Furthermore, its mechanism is extremely well thought out. The holding bracket, that maintains the phone's position is cushioned, meaning the hold can be nice and firm, but yet not damage or scratch your device. Once the device is firmly put into place, it can be easily opened, by pressing a button and holding it, until the arms to either side open up.
The rotating functionality is also very easy to access - it is located at the back of the holder and has a sort of "sliding" functionality to lock the rotation into place. It can be swivelled to any desired angle.
The arm, coming from the windscreen is very sturdy, and is actually quite hard to adjust without having two hands on it and pushing it. This means that whilst you are driving the device doesn't bounce all over the place.
Finally, the last piece of the holder, is its windscreen suction mechanism which is held in place with a ratchet type holder. This means that once the ratchet it put into place it doesn't come off easily, unless you press the button to let it open.
I should also mention that this also came with grill adapters, in order for it to be mounted on the grills of the cars.
Overall, this device is extremely useful and thoroughly recommended. I did extensive research before purchasing and I'm really glad to have chosen the right thing. Hopefully my pictures in this listing should give you a better idea of how it looks like (It came with a green iPod type background)