I bought this not because my Logitech T-BB13 had left the ghost, in fact, it still works just fine, but because after using trackballs for two decades (I remember the days of the old Trackman with the blue trackball and used it until he died ) my hand is getting a little numb because I'm in one position. I have other units coming in, and one isn't sold through Amazon, so there's no review on that, and this is the first one to arrive otherwise. I've read other reviews about this Sanwa MA-TB39 unit in black, and since the room I'm in has relatively low light, a bright color won't bother me. In low light, it actually looks pretty good, although I don't like the red LED in it too much, which isn't as distracting if not needed.
As others have noted, this is a bigger trackball, both in terms of the housing and the trackball itself. Rather than a slightly moderate climb from a Logitech Trackman to approx. 1.25", this unit has a significant height and slope to a peak of about 1.75". This added to an additional 0.5" length shifts the hand position to the range of 45 degrees (compared to 30 degrees for a Trackman), estimated by the naked eye for both. It's a significant increase that also tends to increase the and down from the rise With a Trackman I tend to have the palm of my hand up but with this Sanwa device, my palm rests on the rise from the side of the device towards the user. This places the fingertips of my fingers resting on the buttons behind the wheel and removes the island that the Trackman had in front of the wheel. With a Trackman more of the finger is involved in clicking the left and right buttons, whereas with this device being just the fingertips also means the base of my hand rests on the device, and some padding is needed for any use of the Sanwa for extended periods of time. I have an old rug mouse button that works well for this.
The experience of a bigger body and a bigger ball, one where the tip of the thumb does the actual manipulation rather than the whole thumb, and the sensitive sensors make this a very different beast from the Logitech Trackman. For the first time since I started using computers, I had to set the pointer speed in the mid-range. I work with one of the newer quad definition monitors so I'm not short of pixels to go over my monitor and yet with only Win7 controllers a simple tap of the trackball takes me to the whole screen, bottom left to top right. For a simple movement of the 0.125" or less trackball which is too sensitive for my taste. I also had to set the double click speed as the 'fast' range as this has to be something a squirrel taking its first espresso can do. could be doable, but I can't.
If you're used to the Logitech line of trackball pointers, this Sanwa unit is an experience. I also suggest uninstalling all Logitech software... I've never seen much use for it and haven't used it for anything special in the first place and the stock drivers are good enough for the Sanwa unit. Longevity can be an issue and note other reviewers who have had it for a while, I'm only in my first week with it. It lets me know how tight my hand was with the Logitech Trackman, which has been my trusted interface for a long time. Due to the size and height of the Sanwa, I can say that some of my tendons need a better shape to work than a Trackman but I don't know if this is the answer because the base of my hand has to. sit outside the appliance.
Conclusion:
I am very happy with this machine. I think SANWA Wired Ergonomic Trackball Mouse would suit all levels of experience. I look forward to using it for many years to come. Overall, this is a great option if you want a great Trackball Mouse. You will not be disappointed. You can take SANWA Wired Ergonomic Trackball Mouse, after that, if you like this review post! Please see my other review posts. Thanks
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