Very interesting video, especially when it comes to the graphs. I however think that the cold bias sound might fit into a heavy rhythm mix better. The cold bias also sounded dynamically more even, whereas the hot bias introduced a certain "choking" effect that might fit the 80's style but not the 2000's style. Then again, Mesa has defined Nu Metal as a genre, and it's fixed cold bias. Also wouldn't it be nice to have two amps set one hot one cold simultaneously. What is your preference?