I upgraded my 9500i to 9500ix. These observations may be old news to most or all, but FWIW:
> It will not accept power from USB - had to take it out to the car for power to update from the laptop.
> I was surprised that it appeared to come back from Escort with my previously locked out false signals still in the memory. I've gone past several of my well known, manually locked out in the 9500i and the 9500ix didn't emit a peep. Either those signals are gone (doubtful) or that data transferred over.
> It doesn't talk as much as before, which is nice. No litany of alarm tones on startup, no "GPS SIGNAL ACQUIRED" on startup, etc.
> It may be my imagination but it seems to get a GPS signal lock faster.
> I don't run red lights, but the first time it announced "Red Light Camera Ahead" it was pretty fun.
> I haven't run into a speed camera alert yet, which is the main reason I upgraded.
> I felt absolutely naked driving around without it while it was back at Escort for the upgrade. I had no idea how used I have become to having the protection.