Marcelo, I don't have a K80, only a super falcon 120. All the planes I saw fly with a K80 was comparable in size and Wt. to the Falcon. All that I also see in the K80 looks very good to me and is high on my must have list. I have looked these over very close and I like what I see about them. Shok and Todd at Dreamworks can tell you more about them and can even hook you up with one.