What I mean is that I think the Edge is one awesome flying machine. The plane will fly good with almost any engine, I've had a MVVS .40 & a TT Pro .46 on them and they flew good. They would do anything in the book and more which was fine, then some guys on this forum turned me on to using a 4 stroke (Saito .72) and what a difference. It's like your flying skills are taken to a new level instantly. When you get this combo dialed in and you're flying you'll find yourself looking up and down the flight line woundering who's flying my plane, he sure is good.