Rosin – what's your favorite?

Most of these blog posts make an attempt at being informational, but this one is going to ask a question.  What’s your favorite rosin and why?  I’ll start us off.  I’ve used Pirastro Oliv rosin for my cello bow for over a decade.  Although it’s marketed as a violin/viola rosin, I’ve found it to have the right level of “stick/slip” for my playing style.