I hate them on the twisty's though, I've not once felt confidence from them. I've felt the bike and I were capable of much more but the tire feels like it's just about to bust loose too easily and I'm about to low side. What I have to do is compensate and hang off the side a little more and keep the bike upright. It's the opposite of my S20's that felt like they would stick to anything.
Are you serious? I think PR2s are incredibly grippy and very confidence inspiring. The only times I've felt them slip was due to either crappy road conditions or pushing them a bit too hard on a very cold day. Even then.. the sliding was very predicable and easily recoverable.
I don't think I'm anywhere near the point where these tires are a limiting factor in my riding. I've seen pictures of these tires after track days.. people ride the crap out of them.
Were S20's on your FZ1 or FZ6?