I have an Extra 260 with a DA50 and really like it. I would like to build a larger ARF of an Extra but with so many models out there I don't know how to choose. Is there a difference in the flight characteristics in the different Extras? eg. 260,300,330, etc.

I think you would see more of a difference between flight characteristics of Extras from different manufacturers that you would between different model Extras. Most are pretty liberal on scale dimensions.

I hear good things about the CAModels Extra kits.

Go to the Giants forum, those guys will point you in the right direction.

Wild Hare's Extra 260 is supposed to be very similar to H-9's, I think it's a 35%.

MPB

You should build a Carden Edge 540