So I'm a little confused here. I have heard that the pro comp heads were coming out with a little better quality than before however, most people say they are just junk Chinese heads that last somewhere between 500 and 5000 miles. I'm about to purchase my heads so the pro comp heads seem like a great choice for only 1150 but, I want to make sure they'll last. Awhile and support 400 horses. Have the quality of these heads finally reached the approval of the members of this wonderful site? Or is it just false hope and I'm better off forking out the 1500 for the Edie's?