Rosin for a CodaBow Diamond SX?

I need to buy rosin for my new CodaBow Diamond SX. I want the best because i have a $1700 cello(it ain't that much compared to others but it's a lot to me...trust me) i want the best possible sound from me and my cello. does anybody have any suggestions on what kind of rosin i should get? or how much money needs to be spent?