I have the V1 and RadarActive transceiver and iPhone app. The hardware works well, but I kind of wish the software was open source, or they at least provided a linkable library or plugin system of some kind (might be limited by iOS) since I keep thinking of neat things I could do with it. For example it would be nice to integrate it with the "Augmented Driving" app.

A public API for the speed trap database would be useful too. I'm not sure what their business model is, right now they just sell the hardware interface.

What I'd really love to see is existing proven radar detector manufacturers incorporate Bluetooth into their detectors, allowing apps to interface with them. Valentine will never do it, but Escort might.

FYI SignalActive (the company behind RadarActive) is based in the SF bay area (San Mateo I think?)