Flagship came out much more understable than intended. That being said, the Flagship I have is a phenomenal roller. So much so that now I need to pick up a little stack of them for my future rolling needs.
I bought 1 when they came out and threw one my friend had and they were both very understable. I guess it was like a speed 11 or 12 and a -4 turn. They do roll well but I couldn't get used to the feel of the plastic, pretty slick.