the other thing is the orientation. i had an ultimate and i swear if i'm not fully concentrating, i have to move the sticks to figure out if its going away from me, toward me, upright or inverted. made for very exciting flights.

another thing is its sensitivity to CG. most bipes i know are very short coupled so if you don't get the CG right, bipes are a handful. my ultimate's maiden was a heart-stopper. the plane was so tail-heavy that it would climb at orientation. even at knife edge it was climbing at a little over half throttle. nearly peed my pants. after i rectified the situation, it was just as easy to fly as any of my sport plane. and absolutely beautiful.