I also have a Goldberg Tiger 2. Mine also has an OS .46 AX on it with 11x6 prop. The plane flies awesome! Predictable and lands nice, not too "floaty" like the 3D stuff but not fast like a warbird. If you get one and with a OS .46 or an Evo .46, mount your engine
close to the end of the mount rails. Reason is these engines weigh about 16 oz. and if mounted per instructions, you might be a tad tail heavy. My only complaint is with the white trim covering. Some of it has come off.

Dave...