★★★★★ 5
Best right-handed trackball ever
This is the best pointing device I've ever used, hands-down. This is the second one I've purchased since I've managed to run out the last one in 4-5 years of very heavy usage. Here's what I like about it.
The real centerpiece of this trackball is the off-center ball. Now, this does make this definitely a right-handed trackball and lefties will probably feel left out, but putting the ball off-center matches the general distribution of your fingers over your hand. It's been to be maneuvered with your index through ring finger, and it is perfectly positioned to roll to any of those fingers as you need to use the scroll wheel or the right mouse button. Compared to a more omni-handed Kensington and the comfort difference is astounding. Likewise, for me, this is infinitely more comfortable than using my thumb for the trackball. The trackball pointing devices that use the thumb inevitably make my hand and thumb joint feel jammed up.
Also compared to Kensington, having a proper vertical scroll wheel is infinitely better than their "orbit ring" in my mind. The index finger quite naturally lines up with the wheel. The overall shape fits my hand comfortably and makes for easy long hours working or gaming.
Construction is solid and it's durable with good maintenance. As noted I used the previous one for at least 4 years, and used it quite heavily for general computer tasking, through EDA tools (Modelsim), through heavy gaming (including FPS and MMORPGs). If you are a button hog, then you might run out, but there's more than enough for me to use and i'm quite pleased with what I've been able to make it do.
Defictis: There are few. As noted, if you are a left handed computer pointer... you'll have to go with a mouse or a Kensington. If you've trained your right hand to point this may work for you. The wireless aspect of the device is not it's strongest feature and there have been a few rare moments when it seems to lose its connection with the base station. And wireless range is probably a little limited, though I've used it successfully several feet away from the base. It does have a few dropouts in motion further away though, so don't use this for a large presentation room or TV gaming.
But that's pretty much it. The sad thing is that Logitech doesn't seem to push this product into stores, so it's a bit hard to find on the shelf where you can do a touch fit. They've used this form factor for awhile though, so hopefully it'll continue to be useful in Amazon sales and make a comeback in a new product again soon. I"m tempted to buy another though to have in reserve in 4-5 years though!
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Reviewed in the United States on December 31, 2010

