I received this one today. I'm very happy with it so far. The suction cup seems sturdy, and the arms that you adjust to "squeeze" the phone have memory foam on them to grip the phone well. I've had issues with a mount having a "rattly" grip in the past, and it seems they've fixed that with this one.
Anker Multi-Angle Universal Cell Phone Car Mount Phone Holder for iPhone, Samsung, LG, Nexus, HTC, Motorola, Sony and Other Smartphones (Black)