superboyac I think your description of
Logitech's version of the free-spinning scroll wheel is spot on. I've used 3 different MX Revolutions and they all behave the same way, just as you describe. I used-to love the auto-switch-to-free-spin mode of the Revolution and was disappointed to see that it was no longer available on my G9. The G9 doesn't switch automatically, there is a completely inconvenient button on the BOTTOM of the mouse that switches between free-spin and "detent-ified" modes. I just use it in free-spin mode at all times, I've grown to like it a lot.
Here's a video that shows the 2 modes of Logitech mice...
http://www.youtube.com/watch?v=VSLZ8m0ABoM