Without a doubt, my favorite Mizuno CB model is the MP-55. So good looking and with forgiveness to go along with that amazing Mizuno feel.
As for MB sets, I would say it's a tie between the nostalgic MP-69 and surprisingly forgiving (for blades) MP-5.
Not sure if the lofts will allow a seamless combo, however, I may have to see if I can get a set of P-7i in MP-5 and combo them with 6i - 4i MP-55s. Now if I can only find a decent set of MP-55s...