I am looking to up grade to an electronic marker, to run on air obviously. Now I like to have the best, and I don't mind spending a few dollars to get it. I have looked at every thing from JT's markers to Angels, and as you all know, it is a big investment so I want to get as much info as I can before I do it. I have heard horror stories about how Auto Cockers are like Harley Davidsons, always breaking down. Is this true? Now I have also heard that Angels are very difficult to fix yourself if they go down. Is that true? Now I would like to get some recommendations from any one who cares to offer their opinion. Thank you.