There is no 60 sized helis that I know of currently. But in the 50/60 range, I would take a serious look at the one recently launched by Century. They are designed for use with blades from 600mm to 640mm, depending on the power systems you install into them.

The N640 nitro version can use any of the current 50 to 60 nitro motors engines:

http://www.centuryheli.com/products/...?currentid=814

The E640 electric version is for power systems from 6S to 12S:

http://www.centuryheli.com/products/...?currentid=813

They are both available in a flybared version or in an FBL version.