It has a secure grip on my phone and is stays in the vent.

Does not flop around, very sturdy, great grip

Could have a better grip on the air

The vent grip gets loose after a day or so and the device keeps falling off, especially in turns

Works great, totally solid grip, and positionable to see the screen from the best angle

The mount's grip on the vent is not as secure as the grip on the phone

Doesn't have a strong enough grip so falls out all the time with an iphone 5S.

Vents fins are typically made of slick plastic that's tough to get a good grip on

Strong grip

The foam part the clips onto your vent holds really strong at first, but after leaving it on for a couple days, it looses its grip and falls off.

Small size but not very strong grip

The first one I bought was missing a rubber grip (the part that presses against the phone) so I had to return it for a replacement

So thought of trying the vent grip style