This was replacing an Brodit active holder for a HTC Desire, so I knew what I was in for.
It even uses the same profile for the mounting holes, so I was able to swap it over in about 5 minutes.
Remember, with these, you buy the holder for the handset, the bracket for the vehicle, then screw them together.
It's well built with the USB charger fitting snugly. It took a while for either the unit to loosen up a bit, or me to work out the knack of getting it cradled up quickly, but now it fits every time.
Brodit make by far the best vehicle mounts, so I can't recommend this enough.
I went for this over the official HTC mount, since that features a suction cup mount, and the profiles of my windscreen would make it too far away (and not as professional).
The only thing that the official unit does that this does not is automatically launch the Car application when the handset is cradled. On previous HTC handsets, this was just a connection between two USB pins, letting you know that it's a car cradle, but I haven't seen such information on this one yet.
If you're looking around, buy this one. But then I would say that, I prefer Brodit!