RE: what engine for this CAP 1/4 scale ?
Yeah, that's right. It was a good flyer but you could rule out being able to do much torque roll 3-d type stuff. It depends on your style of flying. Besides, the O.S. is only a few bucks more than the Webra.
They're both real good motors. I think the O.S. would give you more choices later on for suitable airframes.