I haved the Flat Edge , but haven't built it yet. I am flying a trident right now and haveing alot of fun with it. My buddy Paul Swany is flying his FlatEdge. He likes it too....I would say the difference in the two is that the Trident is maybe a little more rigid with its I-beam construction. The flat edge is built with the CF tube in the wing and fuse....I think the tube allows for the plane to be a little more durable, just because it gives more than the I-beam. I can see the wings flex alot when you do waterfalls with the Flat Edge. Dont get me wrong the Trident flex's too, but not as much as the edge. I would have already started my Flat Edge, but I dont want to stop flying the Trident, plus, my flat Edge needs a cover scheme, I 'll do something on it with sharpies, just dont have any good ideas yet...Gator