Yeah, when I bought mine from Radio Shack a few weeks ago, it was the last one...seems that they have a new, improved one for sale now.
Anyway, I ended up taking off the suction cups and just cramming in the plate tightly in the area between the plastic and the rear windshield, right next to the interior light, where it stays surprisingly well. Not sure if I'm screwing up anything by doing that, but things seem to be staying in place and in one piece. The best part about this setup is that it keeps the detector low enough that it doesn't interfere at all with your rear line of sight, since (at least to me) it overlaps with the rear lip/spoiler visibility. While this low of a mount probably decreases the V1's effectiveness, things seem to be okay...it's picked up 2 laser-using cops since being installed.
I used Blondie's guide to installing it, it was absolutley terrific. The only things I'd add are 1. She doesn't stress nearly enough how Effing Hard it is to get the mirror on/off the windshield, and 2. (for me, anyway) I hardwired the unit into the stereo wiring, and I haven't experimented to a huge extent, but it seems that when I leave the remote audio adapter on when the car is off/locked, it sets off the alarm.