Any thoughts on hybridizing it w a multi?
I hybridized both YPTS and Cyclone with N.vy 1.30mm (synthetic gut). I didn't like the Cyclone/n.vy setup, because it felt like the n.vy was taking over the Cyclone, therefore it felt like I was playing full synthetic gut.
I LOVED the YPTS/n.vy hybrid. It gave the YPTS much more power, feel and comfort and the YPTS was still 'dominating' the N.vy.
To answer Op's question, I think both Cyclone and YPTS are excellent strings. The YPTS is a bit more low-powered, but I string full bed poly's usually low, so it doesn't bother me.
In terms of top spin, I would say cyclone is slightly better. I think YPTS has slightly more control.
You should definitely try the YPTS, it deserves a chance!
Out of the 2, I think I prefer YPTS, mainly because it's better in a hybrid and I need the extra comfort due to sensitive arm. In a full bed, I think I like both equally.