The Zebra ST is my #1, as well. RSP is #2. I haven't ranked everybody else.
I don't know if RSPs will use cherry laurel or not. Maybe she was tasting it because it was close, but not quite what she was looking for. We get a lot of those cherry laurels down here, too. I think their leaves are more serrated than the Black Cherry. That's how I tell them apart, anyway.