Hi i have this extra i have found it flies very well no obvious supprises you know as extra's tend to! One thing i will say is please add loads of extra strength inside the fuz above the landing gear. Mine cracked on the first gentle landing so i put some fibre glass paste all over it and its now ok. I used the CRRC Pro 45cc engine not the most powerful but it does all the usual stuff prop hangs harriers etc. I really want the 2.6m version now trouble is that means new engine etc. plus Al's hobbies put me off it saying its to heavy due to the paint job. I love it but its not practal for flying to much weight they tell me.
Good luck this model look the dogs bols in the air.
Iain
PS. i put smoke on mine its just awsome.