If I might chime in, I found the Gillette Nacet to be an absolutely fantastic blade in my Rocca. It's the right balance of sharp and smooth to compliment that much blade feel. I've recently picked up Polsilver SI after some time away from them and they're doing a fantastic job with a shallower angle. I've also found Rapira Stainless to be great in them, but they're seemingly more subjective than the other two offerings. Chuck me your address and I'll wing you a pack of each of the two listed above to try out.