Stiffness is about the same. But if you look for a really powerful and more head heavy one, then the N80II is the one to go. N99 is more even balanced, maybe only very slighty head heavy. And since it's lighter in the head, it is by nature a bit faster. Although the N80II is also surprisingly fast for its head weight. I haven't played with the N90III yet, so can't make any comparison there.
Thank you to all those who replied me, now I will search the web for some EU shop selling the Calibar 800 for a decent price
Too bad I let go off mine, but anyways was just lying in my bag, better to be used than just rust lying around. It was the best power oriented racquet I had when I used it for doubles, just that it wouldnt forgive me if I was sloppy in my defence.