https://marco.org/2008/08/07/im-loving-the-mx-revolution-so-far-i-didnt
I’m loving the MX Revolution so far.
I didn’t like the Logitech Control Center software because it does weird things to scrolling speed and behavior, but one cool thing: you can configure the auto-unlocking scrollwheel with the Logitech software, then uninstall it, and the setting sticks.
Without the software, special button mappings don’t work, but USB Overdrive can remap the buttons to whatever you want.