Speedy

I have definitely had my share of speeding tickets in the past. In fact I had to spend EIGHT hours in driving school a few years back b/c my license were on the verge of being suspended. I often thought about investing in a radar detector but there were too many stories out there saying they were illegal. I have cut back on my speeding tremedously since adding new passengers to my car and don't need one now. Do any of you have one? Do they work?