This is one of those strawmen to me. Who says there are "harsh transitions" on Quads? I have been skating on Q0 for three years and don't notice the transitions. It's not like it goes from a 12' and instantly changes to a 9'. It's not scalloped. Like many transitions between different radius arcs, there is what is called an easement, that gradually changes from one radius to another or straight to curve or vice versa.