I agree that Olivia is a fantastic rosin. I used it does years with my viola and I was never disappointed with the results (other than my own playing, of course). Lately, I’ve been using both types of Magic Rosin. It’s quite good and provides some solid grip on the string. Not too much dust, either. I also have a cake of Jade in my case. I’ve become less enthusiastic about it, though. It’s soft to the point of being brittle, and terms to leave buildup on the strings over time, even when regular wiping.