Complete newbie here, so apologies if these are stupid questions.
I managed to find a complete 8500 (the original, not the X50) that my dad used to use in my parents house. I tested it on a few trips and it definitely works!
However, I know this detector is pretty old now. How useful is it compared to the current crop of RDs? I know this is a pricey past-time, so is it worth it to consider a trade-in/upgrade?
I've also heard that old detectors can be updated with more recent software, is there any truth to this for the 8500?