i happen to have the harrier 90 aswell and it does 3d great. hovers are nice and smooth and knife edges oh boy are they pretty. whats even better? harriers! and landing it has been a joy for me but i got it slightly tail heavy so it comes in slow and glides in at a harier.
bought a cg machine and ballnced the bipe hope ti fly it agian tomarrow. hope it goes better. if not i might just pull my motor out and order a funtana 90 (yellow version) i miss mine! so if you see a bipe for sale you know its from me : ]