That’s a thing 
OMG thank you so much I didn’t realize that actually was a thing but I just looked it up and it is. Thank you for letting me know about this 
Interesting topic. The tricks I’ve learned to this point haven’t made me think about the “which string is best question” but I recently learned gyroscopic flop, which requires a whip (which I also had to learn). I found that the string that came with my Draupnir was so light, it was very difficult to whip. YYE string was fine.
The only spare strings I have are YYE and a couple of Zeekios. Will invest in some different Kitties and see how I like it for different tricks.
Highend string is pretty good. Very thick, binds tight, and lasts a while. Its a bit rougher then kitty, and it has this cool core thing that makes it feel pretty hefty, which is unique. Kitty xl is pretty good as well, I am still on a hundred pack that I got a while ago.