Summary: Quick and easy setup. Just take it out of the box. Plug it in. Download Kensington Trackball Works and you're set. EARLY IMPRESSIONS: Coming from having owned the best of the best mice and trackballs from Logitech such as my current Marble Trackball, the M570 (which possibly contributed me the De Quervane syndrome I have now) and the Anywhere Mouse, not to mention scores of other mice and trackballs over the years include the 1990s version of the Kengington Expert Mouse...
Summary: I have the other version of the trackball the Expert Mouse. This is even better. I love the spinning of the wheel to scroll. My only problem occurs when I go back to my office and start spinning the trackball on the Expert Mouse and no scrolling occurs. (Have to use the ring on the Expert.) I have read reviews complaining about the software but I am not sure I understand the complaints. The software is completely customizable.
The Slimblade really is better than the Expert Mouse Trackball - why did I wait so long?
17 January 2013
Summary: I have used the Kensington Expert Mouse Optical USB Trackball for as long as I can remember, avoiding the Slimblade. After a week's use of the Slimblade, I am sorry I waited to try it. It has a smoother action, the same 4 buttons and the same size ball as the Expert Mouse Trackball. The lower profile causes less carpal tunnel discomfort, and I don't have to use the the dopey detachable wrist rest.
Summary: It's still my favorite track ball design. I've gotten used to the scrolling feature which is now accomplished by turning the trackball like a water faucet. I had the previous version of this track ball that had the scroll ring. So this took a couple of days to get used to it. My biggest disappointment is the software. MouseWorks did so much more.
Good hardware, but here's what their Software Support lacks
David Learned, Amazon
5 November 2012
Summary: This product almost needs to be reviewed on 2 separate fronts ... the physical hardware (trackball), and the product support. As for the trackball itself, I love it. Great aesthetics, the rolls cleanly and smoothly, the functionality of "Twist to scroll" is a great feature that becomes second nature after just a short time. Easily a 5 star product. However, the deficiency (as you've surely read already) is in the software and driver support.
MS Explorer Trackball users, you'll be ok (AutoCAD user here)
Brian L. Dickman, Amazon
12 October 2012
Summary: I have used the MS Explorer Trackball for more than 10 years and absolutely love it. By far, the most comfortable option for a trackball on the market. Unfortunately, they don't make it anymore and mine has finally worn out. In the past, I had used a Kensington trackball and really enjoyed it, but knew it didn't have the same natural hand position that the Explorer had. I decided to give the Slimblade a chance. At first, I was really struggling with the change.
Driver software is a serious issue; otherwise quite good if you have the desk space.
25 September 2012
Summary: Like most people in the trackball market, I switched from ordinary mice for ergonomic reasons. From the three trackballs I own (Logitech right-handed thumb-ball, Kensington Orbit with Scroll ring and this), this may just have the best record in that respect, followed closely by the Logitech. (Unfortunately, I'm left handed, and there's a limit to how long I can use a right-handed device comfortably).
Summary: Like many reviewers here, I'm a long-time Kensington "big ball" user. I've tried other trackballs, but nothing has ever topped the big Kensingtons. I've watched this product evolve over 2 decades of being a trackball fan - my first was an ADB (pre-USB for Apple) version. The previous Kensington models -the ones with steel bearings inside - tended to last 3 years or so for me.
Summary: I have used a trackball with my desktop machines for over twelve years. Until now, my favorite was the Microsoft Trackball Explorer, but I think this one may have it beat. The large, finger-controlled ball, the four programmable buttons, and the twist-to-scroll functionality are all top notch. It takes some tweaking to get things working the way you want, but the result is trackball heaven. I have also used a Kensington Expert Mouse for a long time.
Summary: I am a long-time Kensington Expert Mouse user, and it seems that with each new generation they improve upon the already-fantastic previous generation. I know it's not called an Expert Mouse, but in my mind it is the next iteration of this fine product. I was a bit wary about ordering this after reading some of the previous reviews, but I have always had good experiences with Kensington trackballs, so I took the plunge (besides, if I didn't like it I could return it).