+1 on the droid, I am very impressed with its GPS capability. It even switches to Google street view when you near your destination and shows you what it actually looks like. You can even view your custom maps from google as its integrated. Very good for custom routes.
I had a storm and just got the droid, a million times better hands down.
They also make a nice car kit for it that has a "ram" like mount and a windshield suction cup mount. I just adapted mine to the Ram stem mount I had. Just finished it this evening, no camera to take pics, I would usually use the phone! I will get some tomorrow. Very clean install.
Anyone looking for mounting solutions www.ram-mounts.com is great quality, and lots of options. I went for the stem mount because I am kinda OCD about symmetry.