I agree with dave as I have bought, built,and flown the new version with o.s 40 la's witch in my opinion should give aprox. The same performance as the 25fx and im getting the same fligt times 7-9mins.I love this plane and have flown it quite abit the last few days.My only complaint is that the trim sheet is starting to peel wherever fuel soaks. I recommend lustercoat 1st.Good luck.
Randy