i have one built from a kit 10 years ago and still flying.. i have had two from kits and flown others. they fly good but they really are just a low wing trainer. every 4 star i've flown either kit or arf fly about the same. they really float to slow speed for landings . one thing they will do is if your flying at medium to high speed in level flight, is if you put in left or right rudder the nose pitches down in the direction of the rudder input. every one i have ever flown does this. the plane is also very forgiving for a low wing because of its thick wing . the airfoil is somewhere between a flat bottom or semi symetrical wing so you can have a lot of fun with it. the wing structure has no cap strips, shear webs or leading edge sheeting. the strength in the wing is the covering. this was the way the earlier kits were. but it works. never had a wing failure. i'm not sure if the arf version is like this or not. when they first came out i built my first one from a kit. if i remember the said in the building manuel not to put anything over a .40 engine on it. but i've seen people put hot 45's,46's on them without a problem.