Demoed the 2012 9m today in 22-26 kts half de-powered, I weigh 90 kg and wearing boots. What sizes should I get 12/9 , 11/8 or 11/9 to ride 18- near 30 and still unhook?

I would go the 12/9 at ur weight and with boots. I way 70kg and could get away with a 9m up to 30knots no worries and still be able to unhook at 25knots. A 8 is too fast to be bothered unhooking and a 9/11 combo would be too close in wind range...
I think the old bar is tops compared to the other rubbish out there (simple and clean) but I have been told the one you would have used on the demo will be replaced shortly with a new setup thats on its way.

im tellinn ya nick, ya should try mine sunday c u at pinaz

Get the 12 mate, you were kiteing much better on that C4 than those other gay kites you had. Don't be put off by the size, the best sessions I ve had have been on a 12.
My head still hurts from yesterdays kite might have to give it a mis today.

Done new 9 and 2010 12m and oop's C4's