12m, 9m is a perfect combo.
Between the 2 kites, the CB is a higher aspect more forward flying kite that will have a little more range, great hang time and geared also towards racing.
That being said, the SB is by far the best selling kite. It's priced right, and is a kite that can be used by so many different riders. This years SB is quicker turning and has lighter bar pressure than last year, but also has a little less power.
For the value, I much prefer the SB.
We have some really good riders in our area that boost huge on SB's and like to throw technical tricks.
I hope this helps and good luck,
I have a 10m and 13m xbow.
extremely stable in wind gusts, we have extremely gusty wind and everyone would complain about it and I would be like, what gusts?
huge wind range. I have (accidentally) taken my 10m out in gusts to 40mph where I was dangerously overpowered but the kite was 100% stable. If I was a better kiter with strong legs I possibly could have controlled the kite better.
I love the IDS system, it really works. That said the 2012 bar really was complicated, pre 2011 bars were great. There is a spring which scares a lot of people but really works to keep the trim lines within reach.
Great hang time in jumps
power is 1-2m greater than other kites
great for park and ride
great for racing
will not drift at all, if you ride towards the kite there is a good chance it will fall
slow turning - if you would rather work your kite to get power, then this makes it difficult
not for wave kiting or wake style (unhooked)
higher than average bar pressure (good for building arm strength)