I have a Brison 2.4 with Bisson Pitts turning a Mejzlik 20x10 CF prop. I've only flown it about 20 times but it is really nice.
Kinda heavy at 15.5lbs but flies very nice. I have the Sig Sukhoi too but have not started it yet.
Just finished a World Cap 232 1.20 with a Zenoah G-23 GLOW version turning a Cleveland Cyclonic 18x6 CF prop.
The Sig Extra is a real bargin at $349.
AcroFlyer