Indeed, the rigidity is better (the screen remains readable when driving, vibrations are reasonable but existing) but I find that the ball lacks rigidity. Touching the phone tends to make it turn.
It is smaller than we could believe in the picture, what is ultimately good for the discrete side. RAS on the side of the cup.
On my xperia s, the pressure exerted by the clamps tends to press the side buttons (volume, camera ...).
--- Update ---
After 1 month of use, the carrier was moving increasingly in the turns, until finally breaking up in the rotation ... So it did not last more than a month.
