Well, not necessarily together. But experience a little bit of both today. Ive been playing with Poly strings since i can remember, and the other day i bought some Kirschbaum Spiky Shark since it is on sale. Well, i did not like it, it found it too lively, not enough control, or feel out of the string. Some shots were fine, but some just seem to go too deep, maybe it has to do with the tension, but i didnt like it. On my other racket, i had some synthetic gut i got for free, so i just used to compare with poly, since been that long. Well, i was somewhat impressed, I mean, didnt feel as good as Alu Rough that i have been using, but i had plenty of control and spin. They did move a lot more, and didnt snap back in place though. Durability seem like would be an issue too, as the already have some good dents on the mains. But they are a lot cheaper, and supposedly better for your arm, i might just have to give them another chance. Well that it, nothing special, just wanted to tell someone how my day went.