Mice and Pointing Devices

[Ctmx]

The Logitech MX Revolution has been the best mouse I've ever owned, bar none.  I tried replacing it with an MX Performance, but ended up returning that and sticking with the Rev due to lack of smart-scroll wheel.  None of the current Logitech models seem to have this feature anymore; was it too expensive to produce?

If only the MX Performance had the smart-scroll feature...