@musicman Maybe not "collaborate" but I could make a list of 20 or so albums that I keep coming back to. I have a hard time narrowing down things like this because there's a lot of music that moves me in different ways at different times.
Plus there's a lot of stuff that I like that I'm not sure folks would put into the metal category. E.g. Patient Zero and Neurotech would be artists that I'd want to give a serious nod to but are they really metal? :)