He'll put whatever part the owner wants him to or supplies him with if its a quality part.
of course Mark gets a deal from AMD but he is not going to turn down using NOS or nice original parts.
He also knows what massaging some of the new sheetmetal needs and I've known him to be very happy sometimes to use original sheetmetal.
But of course if he is using AMD he's going to plug them.

Believe this or not, but i know it to be true. He plugs businesses that he gets no more then a regular shop discount from if its a good product, he feels that he is helping out the people that dont know where to source certain parts