I have had the 8500 since it came out over 4 years ago. Since then, I have contacted Escort several times about varrying issues. What seems to be constant is that their customer service really sucks! It is among the worst of anyI have ever dealt with. I couldn't get any info about the in house testing of their laser jammer and the attitude was so bad that I decided on the blinder system. I asked about a pop upgrade for my 8500 a year ago and was told that there would be an upgrade available LAST September. Then the lady told me that I should send my unit in for a firmware upgrade anyways to be tuned up. I opted not to. Fast forward to today....I called to ask if there were any updates for the original 8500 and the lady told me that they were years away from that, but she would be glad to sell me an 8500 X50. Oh and she told me in no unambiguous terms that there has NEVER been a firmware upgrade to the 8500 (except 1 to make it work with the laser jammer) OR the 8500 X50. I asked her again if she was sure that the original 8500 X50 software was the same as the units that were shipping today and she said absolutely. She also reassured me that it detected ALL laser, including Laser Atlanta Steakth mode and ALL pop. I am seriouslly considering going to the V-1 in a year or so when I am ready to retire my unit. Or, maybe there will be another major player by then. Too bad for Escore because I was happy with the performance of my unit and COULD have been a customer for life. Thank god for competition!