If you don't have the Boomtown Hobbies CF Tailboom get it. It makes a big difference.

[link]http://shop.boomtownhobbies.com/displayProductDocument.hg?productId=1&categoryId=2[/link]

I can easily do climbing/banking turns and descending/banking turns. I've found that the trick is to add more yaw than aileron (bank). Also need forward momentum at the same time.

I fly in a large open warehouse and can zip around at good speeds, spinning turning and banking. Piruets (sp?) are also pretty easy.

Check videos here and on youtube, there are some pretty aggressive CX2 flyers out there!
I know it doesn't compare to the 3-D acrobatic helis, but that's a different ball game .