On my trials I have a sloped frame like the Pashley and United ones, what are the advantages to have one that is squared off on the top, I don't know if mine is a Pashley or United, and are there any advantages to the curved ones, thanks.
my generic unicycle had a frame with a round crown and my onza has a straight one. An advantage for the round frame is that you won't hit your knees on it. I had bruises all around my knees from my onza because i would do something like a rolling mount and smack really hard against the straight frame.