Don't have a Mayhem.... But between the other two.... The UCD is a High fun factor
really east to fly, and does the things it can do very well!!! A great plane to have in
your hanger.... I have seen a mayhem with the S-125... It seemed like a great
combo and was a very slow stable fun flyer.... The Showtime IMO is a great plane,
and can teach you to fly better, but it will show your bad habits, But if you work with
it, it can teach you to be a better pilot... And it is a very nice plane......