Marble

Pros: Easy to use.

Cons: Needs a scroll wheel.

Pros: Smooth roller ball operation, good placement for the right and left click.

Cons: Poor drivers that won't properly boot. Universal Scroll click (left rear button) is poorly placed.

Pros: Simple to setup and use. Fun to watch coworkers move it around in frustration.

Cons: None!

Pros: Small desktop footprint Smooth operation. Short learning curve to use

Cons: None as of yet.

Pros: Great for someone that has carpal tunnel issues.

Cons: All it needs is a scroll button and it would be perfect.

Pros: easy to install, smooth use, easy to use, very comfortable, speeds up surfing

Cons: may be hard for some to adjust to

The Bottom Line: A pleasure to use and so much easier than moving my hand and arm wildly around the desk to make the pointer go where I want.

Pros: Feels great in your hand, great performance, easy to install

Cons: Just takes some getting used to

The Bottom Line: I definately recommend this product, and do to everyone who complains about their computer mouse. Great product!

Pros: Stylish, High-quality, dependable, a fully functional, Ergonomically designed no moving parts to degrade.

Cons: Absolutely NONE. Several years experience with Logitech and product.

The Bottom Line: Spend much time at PC, protect your wrist from carpal tunnel, Logitech Marble is an excellent choice, low cost, high-quality product, 3-year warranty. A must have.

Pros: Comfortable, easy to get used to, sleek and attractive.

Cons: None at all.

The Bottom Line: I've never seen/used a better product than the USB Logitech Marble Mouse. For the price I paid it is a steal and you can find them under $20 now.

Pros: Easy to use, ergonomically designed

Cons: A bit uncomfy until you get used to it

The Bottom Line: This is a great step up from your regular mouse, better for your wrist and if you can find it on sale - go for it!