Logitech Cordless Optical TrackMan Trackball

I've been disappointed with trackball offerings since Logitech took their old Trackman off the market. Nothing I've seen on the market since has looked anywhere near as comfortable to use. Recent trouble with my hands prompted me to take the plunge. I purchased this particular model because it looked like the most comfortable thing going, and had received mostly favorable reviews. I can't say whether it's helped my hands yet, but I do find it more comfortable than a normal mouse already. The motion was very stiff at first, but within a few minutes, was very smooth and easy to use. The tracking took a little while to get used to. Even after calibrating it, I had a lot of difficulty moving the mouse pointer correctly in the horizontal plane. After a few hours, movement was pretty natural. The thumb button (left-click by default) is very nicely placed, and became intuitive quickly. The scroll wheel, likewise, became very easy to use very quickly, although I still have some difficulty using the scroll wheel's click-button capability (which I depended on heavily with my old mouse). I still have some difficulty highlighting text easily with the unit after a couple of weeks, but have easily worked around this by highlighting with my keyboard in most instances. The wireless connection has worked very well for me, and is quite responsive. It's indistinguishable from a wired mouse for me. Very easy to use and intuitive now, though a bit slow. Also much more comfortable. For office applications, I wouldn't use anything else now. For home use, I'm still on a traditional mouse, because I can't use a trackball quickly enough for gaming.