Now that I have determined that I really enjoy oil pastels I want to purchase a really good set of them. I read that the three top choices are Unison, Schmincke and Sennelier - with Unison being the best.

Have you used any of these and what are your thoughts. Unison is supposedly hand made so I assume really expensive. At this point though I figure that it will be worth it if it is a medium I enjoy working with.

Thoughts or ideas or even additions if you are using a pastel I haven't listed and like it.