I own a brand new X50 that I purchased from best buy, and my friend owns a very cheap 40 dollar cobra detector. We ddecided to put both of them in my car to see which one would alert first. I know that 2 detectors in one car can effect perfomance. Anyway, the only thing we encountered was a "your speed is" sign, and they both alerted at the same time. It is my understanding that those signs use very weak radar, but should the X50 have detected first? Also I did not get any leaking from the cobra which is weird. What do you guys think?