Most posters here will go with the Misono.
I don't own one and have never used one so I can't comment on that.
I do own a MAC pro range 8" chef knife (HRC 60) though and absolutely love it. I recommend it. Not necessarily over the Misono as I have no way to give a proper comparsion between the two.
I think the MAC ultimate is a heavier knife w/ a 3/4 bolster and slightly higher HRC.
Many "celebrity" chefs use both knives and recommend them, so I wouldn't let names decide for you. That just seems to be more about marketing. Just my opinion.