Never been a fan of the Jabi's no matter what design, gotta say though this thing looks like a Dorneir D28 ate a pallet of marshmallows and gave birth to the Fisher Price version of itself!! And agree with video comments, very rugged around the edges for so-called "test pilots"....of sorts! I dunno much about their engines in particular but to me they just sound like they want to quit, or maybe it's all the rattles and plastic gadgets trembling on the airframe. Definitely not the twin for this black duck!