It will be great. Bluefire M1 is a superb attacking rubber well suited to a player who likes to play with strong power and spin in their strokes. Dan actually did a review on TTDaily which analyses the rubber well. Essentially the Diabolo being a glass fibre blade has excellent control so it balances out the strong attacking ability of the Bluefire M1 and adds an extra element of control and a larger sweet spot! Sounds like a great combination