I always use the click-click scrolling, I never really liked the smooth scrolling wheels. But today, for kicks, I switched the wheel on my VX Revolution to the hyper-fast smooth scrolling, and tried it in Safari in Snow Leopard. Wow! It functions like I thought it should've functioned - the page actually scrolls with the wheel, instead of in indents like the click-click wheel, but without the click (I hope you know what I meant!). I never knew the VX Revolution has the capability to output this kind of detailed feedback from the wheel! This should work with any Logitech mouse that has the hyper-fast scrolling wheel. (Just a note that I'm using the default generic mouse drivers in Snow Leopard (no Steermouse or Logitech Control Center or the such)).