McMike I see you like biplanes, I built a tiger moth last year, from gee bee manufacturer, it's a small biplane wich I powered with a little .40 size saito 4 stroke, sounds and flies very scale, I also have a Kyosho Pitts now discontinued, it does not fly very well. I have tried on it a Super Tigre .51 (Underpowered), Saito .72 (underpowered) and finally a Saito .91 (Overpowered and too hard to handle). Now with my Ultimate I just hope it will be as Goldberg Products said Well behavior at low rates and highly acrobatic at high rates.
Anyway I love bipes and plan to build more of them.
Thanks.