In researching mine, part of what sold the Marks was the sound that Redbones bike makes.
The UFO's look better to me. Actually I like the megaphones.
The thing that I heard from everyone about the UFO's is that they are loud. They are so loud that people who ride with you get pissed off. Disturb the peace loud.
When people spoke about the Marks, they said it was loud. They didn't ever say loud enough to piss people off.
Mostly to try and avoid a yellow lickey, I went for Marks. I think you know what I mean. It's just what I heard. Everyone has an opinion.
Also some people say that Jon (from UFO) is a bit of a wacker. When I spoke with Mark he seems as honest as the day is long. Once again, everyone has an opinion.
Nobody has knocked the quality of either one. They both have people recommending them 100%.