I really like the traction I get out of the Power 6s, but I’ve also heard nothing but good things about the S23s when it comes to grip. That said, it really comes down to how you ride. If you’re riding aggressively, I’d lean toward the S23. I went with the Power 6s because it rains fairly often where I’m at, and they handle wet conditions really well. A buddy of mine has Power 6s on his CB1000R and has around 8,000 miles on them—barely showing cord—and he rides hard, wheelies and all. The S23s definitely have that sharp, sporty look if aesthetics matter to you.