Rating: 
Summary: will not last forever
Review: im in the market for a new trackball. ive used a
Logitech Marble Mouse Trackball for about 3 years. one of the buttons has become weak and falters. i hold it down, dragging the things onscreen, and the button flickers off, dropping what im dragging. is the life of a mouse 3 years? can't we shoot for 10?
Rating: 
Summary: new marble mouse one step backward
Review: logitech's new marble mouse is everything it says it is, except for the fact that it is a two-button, not a three button mouse. The placement of the left mouse button makes it difficult to double-click easily....it would have been simpler to mount a third button on top of the mouse, next to the trackball. A single push for the double-click feature is used far more frequently than any other mouse function.
Rating: 
Summary: The search for the ideal pointing device ends HERE.
Review: The Logitech Marble Mouse is possibly THE most intelligently designed pointing device on the market. First of all, in spite of its name, it's a trackball, the superior successor to the computer mouse. Unlike a mouse, it sits in one place and your fingers guide the pointer. You click on menu selections, icons and such with your thumb. It takes mere minutes to get used to this method of moving around the screen but after you do, using a mouse will seem cumbersome and quaint (which it is).Beneath that black-dotted burgandy ball lies the secret of the Marble Mouse's responsiveness, longevity and reliability. An infrared emitter and optical pickup track the movement of the ball, not mechanical rollers which quickly become gunked up with skin oils and dust. You'd have to let a really thick layer of crud accumulate on the ball before you'll see an impact on the Marble Mouse's performance. Unlike its more expensive siblings, the Trackman Marble and Trackman Marble FX, the Marble Mouse is fully ambidextrous, with equal-sized buttons on both sides. And recently, Logitech added enhanced software to their website, enabling the 2-button Marble Mouse to behave like a 3-button mouse (you press BOTH buttons together to access the functions of a third button). Finally, though the purchase price... might seem steep in comparison to the $10 mouse you could pick up at the nearest Best Buy or CompUSA, just recall how many of those cheap little rodents you've owned in the course of a single year.
Rating:
Summary: Comfortable and moves smoothly
Review: This is the most comfortable trackball I have ever used. The ball glides so smoothly that it's hard to tell whether you're moving it or if it's moving on its own. There is never any strain on my wrist, even after hours of continuous use.
Rating:
Summary: new marble mouse one step backward
Review: This is the second trackball I have owned. I immediately noticed how well it fit my hand. The buttons and ball have a high quality, expensive feel. It works effortlessly, and can make hours of work (or school) easier. A lot of product for the price.
Rating:
Summary: excellent product for the price
Review: This is the second trackball I have owned. I immediately noticed how well it fit my hand. The buttons and ball have a high quality, expensive feel. It works effortlessly, and can make hours of work (or school) easier. A lot of product for the price.
Rating:
Summary: you'll never have to buy another one!
Review: This Logitech trackball is pretty good--durable, sensitive, with sensible button placement. That said, its ergonomic design isn't for everyone; my large, stubby hand and fingers aren't ever quite at rest with it. (Could it be that that's the secret of ergonomy?) I hated it at first, but have grown used to keeping my wrist muscles slightly tensed. As a writer, I don't use the pointer nearly as much as the keyboard, but I imagine that a designer or other GUI-intensive professional might find this problematic. For less-frequent users, or those lucky enough to possess properly-shaped hands, this is plenty good enough.
Rating:
Summary: Good, solid trackball
Review: This Logitech trackball is pretty good--durable, sensitive, with sensible button placement. That said, its ergonomic design isn't for everyone; my large, stubby hand and fingers aren't ever quite at rest with it. (Could it be that that's the secret of ergonomy?) I hated it at first, but have grown used to keeping my wrist muscles slightly tensed. As a writer, I don't use the pointer nearly as much as the keyboard, but I imagine that a designer or other GUI-intensive professional might find this problematic. For less-frequent users, or those lucky enough to possess properly-shaped hands, this is plenty good enough.
Rating:
Summary: If your're looking for a great trackball this is the one!
Review: This the first trackball I've used, that feels like a mouse. It takes a whole ten minutes to get used to and after that you'll never want to use a standard mouse again. Sure you could buy another basic mouse but think of how many of those things you've gone through in a year. Spend the extra money it's worth it.
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