There are several options for 911 Head studs. We were the first to offer a solution other than Porsche back in the 90's, I think. I remember one current vendor of Head studs coming to my CA shop to look at ours back in the late 90"s.
Our current offer has many features that others do not have. That does not make them the best on the market. That decision is up to the user who sees any advantage they offer over others.
I would never say ours are the best on the market. I do not have that level of arrogance.
You have to have a thick skin, a certain amount of self confidence and a dash of arrogance to stick in this business. Too much of any makes you a fool in my opinion. Your customers need to be your critics and or your biggest supporter.
One of many additional features we added to our latest stud is the ability to adjust the height of the stud with the heads installed. Makes it really simple and quick to get the stud height just where you want it.
We include a Titanium 12pt nut and Titanium washer, both are not affected by temperature as much as steel hardware is.