I got the XTR105 for $29.99 at Radio Shack yesterday. It out performs everything the 9440 picks up, besides how low volume the speaker is. The cobra heavily leaks K and X, and the 105 leaks a small amount of K.
I want to do some actual tests, but I'm having a hard time finding anything to test it on. I can't find a speed sign around here, or a place where a cop sits.