I don't think the big ones are that much different in noise. With electric you hear a ton of gear noise and all the main and tail noise as you hammer it and the nitro is more exhaust, main and tail noise. The difference is in how you like the whine of the gears versus the weedeater sound of the exhaust. Both are loud.

Why not buy a Century Predator gasser? I bet you won't outgrow that one for a while. Better yet, keep flying the Falcon 3D and practicing everything on it.