I've spoken with multiple techs at Escort Radar on more than one occasion, and all of them have said the same.
Anyone that is claiming the ix is any more sensitive than the 9500i is wrong. There is not one piece of hardware or software that improves sensitivity in any way.
So those of you that were considering upgrading with that in mind (I for one have no need for speed cams and wouldnt trust AutoLearn), think again.
Its the placebo affect. If you're getting what you THINK is higher sensitivity in your 9500ix than your previous 9500i, its either your imagination, the conditions of the signal you're receiving, or you had a junk 9500i.