Virgil is one of my favorites, I just don't know if he would fit DT's style.
I was just reading the drummerworld article on Derek. It make it seem like he is a jazz drummer stuck in a death metal band
Plus, he actually doesn't have current employment right now (that we know of). If they were to really surprise us, he might be the one.
I had voted for Marco earlier, I kept my vote, but my feeling after all the rumors, etc. is that Mangini is it.