tried running with POP enabled for the past two days.
It seems, first and foremost, that the 9500i is *MUCH* better at filtering out the awful (and for me, impossibly frequent) Cobra-induced POP falses. I didn't receive even one such false over the course of this rather short test period, and I'll continue to test to this effect over the course of at least the next few weeks.
What's rather more interesting, though, was that as a near-new Mercedes M-class sliced-in in front of me today (this was in traffic, and to his credit, he did signal - so I considered it a "no-foul"), I got a POP, then full-strength K-band, false.
I don't know too much about the M-class SUVs, but I wonder if this model is equipped with some kind of radar-based blind-spot assist device or even pre-crash safety device, and our proximity, combined with this driver's actions, somehow caused its momentary activation - which led to the false warning on my POP-enabled 9500i