Yeah, I weighed several options before I even cut out the first wing rib for the UFO. The SF below 12,000 is extremely quiet; it's really not too much different than a 4-stroke. Personally, I love loud, screaming engines, but a lot of other people don't and my field does have noise restrictions, though not terribly strict. Nevertheless, I will still build a model for the Webra 1030. Maybe by the time I get it built I'll have a quiet pipe for it, too.

David