Well, I've been driving around with mine. Here's the official Q-fugee holdiay review.
I replaced a generic Akron car mount with the Samsung OEM mount. I couldn't adjust the Akron to hold the Epic without mashing side buttons, so it was time for the Akron to go.
-- It's rock-solid. The suction cup and clamp are bigger and sturdier than the Akron. The mount arm is heavy plastic and does not pivot at the suction cup. The angle of your windshield is the angle of the mount arm. That's the trade-off for a beefy arm that does not budge.
-- At the end of the arm is a plate on a ball socket, tightened by a large easy to turn thumbscrew. To level or rotate the mount you loosen the big bolt. Once tightened, it's as solid as the arm.
--The phone mounts on a detachable plate that grabs like a pager holster and leaves room for all the side buttons but you can't open the slider. (I think that'd be asking too much.) A clamp sides in from the left and grabs the USB port. The back of the clamp has USB and headphone jacks. A big red sticker over the port warns that the headphone jack won't work until Froyo. Thanks for the thumb in the eye, Sammy.
The back of the plate buckles into the swivel mount and latches. Very nice, very solid, and it lets you plug in the cables first and then put the phone on the mount. Reaching behind once it's wedged between a windshield and a dash is nearly impossible.
Adjusting once the phone is in place is really easy.
--The cord is straight. I prefer coiled. YMMV. Sammy makes .7A chargers instead of 1A chargers like Motorola. Any USB charger seems to work.
--The promised Samsung Car App does not exist. None of the other Car Apps in the Marketplace seemed to be triggered by plugging in the USB power, so I'm not sure what setting I'm missing. They all work fine, though.
In conclusion, this is much sturdier but less adjustable than the Akron mounts. It's also more expensive due to the built in electroinic bits.
I don't normally worry about looks, but it does look very good, too.
It's worth it.
--Qfg