I built two (one for me and one for friend) right when they came out around 8 or so years ago. It flew real well and did climbing inverted flat spins all day. It does just about all the tricks the morris profile planes are known for. If I remember correctly, knife edge took some time to master, there was A LOT of coupling going on and required a good amount of elevator trim to keep it flying straight in knife edge. It is worth the build, go for it!!

Z