I am looking to order a scanner for my 02 Audi A6 3.0 Quattro and I have a generic scanner but I am getting the ESP light coming on and my scanner doesn't show the reason for the light. After I restart the car the light goes off and doesn't come back on for about 10 miles. Then it comes back on again I have spoken with a few people and the said I need a higher quality scanner made for Audi's. So after reviewing a few websites the Autel scanners seem to be the best out there. I am wondering based on reading more and more which model would people of the support community recommend? I appreciate your anticipated cooperation in letting me know which one you would recommend either the MD702 or VAG505?