I have always used my passport 8500 in either highway or auto mode, I always thought the detection was decently impressive on the straightaway. One thing that I noticed was that the passport filters out off-axis signals a little bit to much. when I would disable x band in these two modes the off-axis would get even worse to the point where if the cop was sitting on a side street I would be on-top of him before getting a signal, so I stopped disabling bands. Those stupid x band falses were so annoying so I tried city noX mode. What I noticed shocked me!!! In city noX the passport could really see to the sides better especially on k band . It would pick up cops even at the most difficult angles and radar over hills also improved. I would also like to mention that ka detection did improve slightly. Has anyone else had a similar experience?