No disrespect, but according to a recent Mike McConville article(see
www.horizonhobby.com/articles/1022.asp ) 3D manuvers include:
Elevator, not affected by box fuse.
Torque roll, not affected by box fuse.
Blender, probably helped by box fuse.
Waterfall, not affected by box fuse.
Harrier, ditto
Parachute, ditto
Wall, ditto
Ive never seen knife edge listed as a 3d manuver. (?)
Anyway, each plane has its strong and weak points.
I 've got the Fun 51, really like it for spins and tumbles, but because of the short fuse, it is tough to hover, but you can do it. It has a nice tall flat profile, but i strongly prefere something with a longer wing for knife edge. Like the Aresti, extra....
For learning most 3D like hovers, hariers, try the Top cap its a sweet heart for that.
For flat spins, and tumbles the Fun 51 is tops on my list, the uproar will probably do just as well.
I can't do waterfalls yet, but i am pretty sure you will want longer wings, like the caps and extras to give the plane a more stable axis.
my two cents, refunds available on request