the stock fuel tank sucks...

other than that it's the best flying airplane that I've ever had.

Have a Saito 1.8 in mine. You need a lot of right thrust, despite what the directions say.

I'm not a 3d flyer, but I can say this airplane torque rolls and does rolling circles (my two favorite maneuvers) better than any other airplane that I've ever owned.

It's very stable. Landings are so easy its a frggin joke.