When it comes down to it skating and footage wise. I prefer Koston's career to Reynolds.
Koston is breadth and Reynolds is depth. Very few people are better at the tricks Reynolds does, and very few has a bag of tricks as deep as Koston's. So theres a short list of Reynolds parts that you can are his best, wheras everyone is probably all over the place when they talk about their favorite Koston part.
I prefer Reynolds, but I do like some old man slappies Koston when he's not talking.