This is something like a review, for what it's worth.
It does volume control well enough, and that is what I wanted the
second wheel for.
I kind of enjoy the heavy and fancy main wheel. If you spin it fast, it
shifts out of gear and spins freely. Then, when you stop it, the gear
engages again with a thump. THUMP. Now the left and right wheel click
feels okay, not cheap.
That MicroGear main wheel is a very complex switch. I doubt there is a
more complex very small switch on a commercial product, impressive
engineering. I guess all the switching stuff on the Revolution applies
to all "MicroGear" mice.
Thus far, scrolling can be difficult/strange. In WordPad, it scrolls
three lines at a time even though the Control Panel setting is for 14
lines at a time and in Logitech's software both vertical scroll sliders
are at maximum. And in Xnews, a single scroll notch makes the screen
scroll very slowly until it stops. I tried reverting to the prior
SetPoint, but that did not help.
The cordless reception is good thus far. Setup was a snap/plug, easier
than ever. There are no buttons to push on the receiver or on the
mouse.
Would be better with more buttons IMO. It is about the same size as the
MX 1000, the same length but slightly shorter in height, and maybe
lighter.
According to a USENET post, I have had the MX 1000 for four years. I
noticed no degradation in lithium ion battery performance with daily
use.