Have used the omega 8000 and it was the version 4 , did not have much emi problems like I have read about from others but Back issues forced me to sell a few of my detectors since I was unable to use them and had to pay some medical cost. Anyway my question is I am ready to buy another Omega as I really like it but am torn between the original 8000 or the new 8500 . Is there really that much difference in them since EMI is not a big issue with me . From what I see and read not sure the price difference is worth it for the few extra features like a back light ETC seems like their close on features . Guess what I am asking is there much depth difference between the two and things in this nature . So if you own one please state your likes and dislikes. Thanks in advance