Logitech Trackman Marble

reliability, usability

100% of the reviews on Amazon.co.uk give this product a positive rating.

usability, price, design

reliability, size

94% of the reviews on Amazon.com give this product a positive rating.

Very accuate, pressing buttons does not move position and uses less desk space than mouse.

Does not have a scroll wheel.

used to get a pain in my elbow from using an ordinary mouse now with this mouse pain is gone

Bit heavy for taking with you to use on laptop

It works as advertised and simply plug and play.

- One of the few good trackballs left on the market - Very reliable with Logitech quality - Easy and comfotable to use left or right handed - Use little space on desk -I have owned / Installed 12 of this line over the years. -Far better than the M570...

-Not as good as the Logitech T-RB22 which is now sadly discontinued -Trackballs dont suit everybody, for a shared machine you may need another device.

Ease of use when hand movement is restricted.

Excellent product. Fully compatible with Linux.

None.

It's a nice size, sturdy and heavy enough to stay put. Trackball great to use - with practice you can quickly 'throw' the pointer around the screen, which is something you can't do with a mouse.

No scroll wheel.

Takes a little getting used to but its a good alternative to a wired mouse

so easy to use ... 5 functions all at your finger tips and so much quicker than a mouse ... solid construction and a pleasure to use even in limited space because you don't have to push it around like a mouse.

absolutely none

uses less space

difficult to hold and drag