I have not heard anything but bad, but one of the members on RJ "gungho" seems to have had fairly good luck with them..
I can say that it is very seldom that I hear bad new about DART, AFR or BRODIX aluminum heads. Seems to me there is a ton of bad news on the net pertaining to pro comp.
I guess my only question is, When you buy a steak, do you buy best cut available? Or????????
Just my take on this matter.