YouTube - Cobra 9440 Radar Detector
I bought this with low expectations and it certainly passed my expectations. I'm going to buy a Pro-78 for Ka superwide band since the 9440 is a bit weaker on Ka than K. Most of the cops around here use Ka with some using K. I'll keep both in my car since the Cobra doesn't leak (fixed in 2008 models?) tested with a valentine 1 right next to it and in another car next to me.
The video is a K band speed trap I don't know how far away, but it's a decent distance. The first time this was found, I had no clue it was there and it warned me before I could see it.
I also have another video coming the opposite way where K band is not being thrown forward.