Summary: Had wrist and arm pain. Used the older white version that was PS2 and wouldn't work with Windows 7 or higher. This version is great for everything except the scroll wheel that seems a little stiff. You can modify all of these settings which helps. My wrist and arm pain is a lot more manageable with this type of mouse. Also the wrist pad smells like a nerf football, but helps a lot having the wrist angle ramp up. I have one at work and one at home for database management.
Summary: I work at a computer eight hours a day, and then I go home to more computer use. I've used these trackballs at work and home for a number of years and wouldn't think of changing. They are a little pricey, but I think they're well worth the money.
Summary: I hope they never stop making this product, as MS did with their Trackball Explorer. This is the only pointing device I will ever use, for the rest of my life. Trackballs are so superior to mice, it's a wonder everybody doesn't have one. And this one is the best of them all. It has weight, it has authority, it has...gravitas. It just feels like a solid piece of equipment. Yes, it's a little pricey, but so are Mercedes's.
Summary: I had the older Turbo Mouse Pro, but it doesn't work on new Mac Systems. The only thing this lacks is it has less buttons that the Turbo Mouse Pro, and you can't easily assign the buttons to do exactly what you want in a certain application like you could with the previous model. Otherwise it works great. Smooth rollerball, accurate and easy to use. There is a drop down selection to tell your computer what to use them for.
Summary: the mouse is very quick and smooth. easy to use, more so with a person with a handicap!! Cost is much less than our last unit from another company. Hope this new one will last just a long, 11+ years.
Summary: I bought a Kensington Expert Mouse trackball to help relieve wrist pain aggravated when I used a regular mouse. The Kensington Expert Mouse works well and is much more comfortable than my old mouse. Kensington offers some software to configure the extra buttons, which I downloaded and use -- very helpful. I'm a computer support professional and work on a computer daily. When I ordered, Walmart estimated delivery in about a week to 10 days.
Summary: I really enjoy the Expert Trackball Mouse. The large ball and scroll wheel makes it easy and fun to use. No problems installing it on my Windows 7, 64bit operating system It's different so be patient, give it a week to get the hang of it and play with some of the mouse settings (i.e. pointer speed and scroll wheel speed. Especially if you have a large screen monitor). I'm pretty sure that you will like it.
Summary: I've had many Kensington Trackballs in the past years ... this one is just as good as the others. The "ring" scroll is something to get adjusted to using. Now.... if I dont wear this trackball out.... :) WHY I like these types of trackballs ? ..... is the big .."que-ball" type ball to roll around. So much better than those tiny trackballs. Chasing a mouse around the table .... IMHO is silly. Pick up the mouse and chase more.... is how....
Summary: I once used the thumb track balls...and miss them. I have gotten used to the traditional mice over the last 6-7 years, and thought I'd give this a try. I have to say, it was a little fun to use, however the tracking lags at first, and I cannot work fast enough with it. It takes 2 to 3 times as long to complete the task using this compared to a regular mouse. I gave it over a week to get used to, however I just could not keep my production level up.