I'm using mine right now. I'm used to the Mouseman Cordless Optical. I had the blue one originally and then I got the silver and gray one with the Freedom Optical Cordless Desktop (same mouse, different colors).
I always thought that the Mouseman was sort of tall and when I switched to the Belkin gel wrist wrest mouse pad, I thought that the combo was nearly perfect. Now.. I'm not sure with this MX700 because it sits lower than the Mouseman did. I just doesn't feel as comfortable with my favorite wrist wrest mouse pad now.
My weird comfort thing aside, I think this mouse is great! It tracks beautifully, especially with the newest mouseware. For those who say that their mouse works great without the mouseware software have got to be nuts. In my experience, every cordless optical mouse that I've tried without Logitech's software acts strange. The movement is way too sensitive for me too without the software.
Anyway.. I love the precision of movement. I love the precision of the scroll wheel with the buttons to scroll really fast at either side of the scroll wheel. What I really, really love is the charger stand! That's what really made me dislike my mouseman mice. The damn things ate batteries and it really went through a charged NIMH fast too, so I was always charging the batteries so it seemed. This new mouse must be designed for rechargeable batteries because it charges so fast and they seem to work a lot longer than when they were in my Mouseman mouse. I even had 1800 MAH batteries in my Mouseman and these are 1700 MAH NiMH's. It must be the power management design.
Well.. Thanks for the deal! As good as this mouse is, I don't think I'd buy it for anywhere near $70 since I had my mouseman, but at $38 after rebates, this is a killer deal!
Sal