Also my experience with auto dark. If your doing a job and spend an hour a day actually welding, they are fine. If your spending 4 or 5 plus hours looking at a puddle, my eyes were always scratchy at the end of the day. Plus, being how I learned to weld with a stick, then learned to flip my hood...I always picked it up and flipped it down anyway, so the auto dark was useless. The lenses and hoods were high dollar "quality" Lincoln, and Miller and a Jackson I believe, still have the Miller around here somewhere, it's a blue shade never used a cheap one. Learned to weld with Pa's Lincoln AC Cracker box when I was 10 to 12? I don't recall, do remember that before I was in High School Pa just "let" me do the welding around the place because he didn't like it, and I was better. So, my auto dark experience lasted about a year, year and a half out of 40 ish. I digress!