The mounts Riqui and I have are from Kuda. The link is:
http://www.kudausa.com/kuda_mount_and_holder_for_mini_mini_cooper_02-06-34-314.htmlScroll down the page, because the first mount on the page is the downtube mount, not the dash mount.
The mount itself is multi-purpose, and doesn't automatically come with the hardware to attach your device to the mount. If you add the mount to your cart, it will take you to the next step, where you choose your device (iPod, GPS, cellphone, satellite radio, etcetera).
The mount itself is $56, and the hardware for attaching a Garmin Nuvi is about $30.
I got the Kuda mounts after having the Garmin suction-cup mount fail one too many times, usually resulting in the GPS bouncing face-first off of the Whalen shift knob.
The mount has two metal tabs, one that slides between the dashboard and the oval vent in the middle of the dash, and another tab that slides under the front edge of the dash. It requires both force and finesse to get both tabs fully engaged, but the end result is extremely solid, considering that there's no screws or adhesive involved.
The Kuda mount is covered in black leather, which is nice, but it's not a very good match to the MINI dashboard, which is actually dark grey. Other than that, I've been very happy with it. It mounts the Nuvi in a location that's easy to see, without blocking the Chrono Pack/Speedometer/Nav display, depending on which your car has in the center location.
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