When faced with the same decision recently I purchased the new H9 Tango. It will be excellent with the 63 but I haven't flown it yet.
Other choices for that engine...
H9 Twist 40
UCD 46
Mayhem 40
Ultra Stick 40
Any of the small profiles: Fusion 46, MoJo, others I'm sure
Basically any of the "40 size" airplanes would be an excellent match for the great engine.

Thanks
Barry