RE: 3D Biplane needed?
have to agree with everyone else here.
Ultimates are the way to go for 3D compared to the pitts or CE. i've got the GP33% pitts/Moki210, and although it flys well, it's not in the same league as my CGB 54"wsUlitmate with an OS 1.08. Love both planes, but the little Ultimate does high alpha much better.
I've just starting flying a 27% AW Ultimate with a DA50. I can tell this thing will rock once I figure out how to dial it in. WAY more sensitive than my CGB Ultimate however.
Double Visions are great flying planes, but I prefer something more scale looking, which the DV is not. Plus, it's too long and ws is too wide to fit in my truck assembled. The 27% Ultimate fits easily.