so i've had the 8500 x50 blue for a little over a week now and this thing is awesome! i like how i can turn X off, my cobra would always be beeping X band and it got annoying at some times. the KA range on the x50 is so much better compared to the cobra! the x50 has a bunch of great useful features too! i might turn POP off too along with the X band.. i was driving by a barn near my house and it started going off and saying it was POP... so i had no clue what that was about.. and the blue LEDs are sweet too... anyways, it was well worth the money, glad i own one now!