I thought I was replacing the VX Nano, which was the best mouse I've ever owned, and which, for some odd reason, Logitech has apparently decided to quit making. The marathon is a full sized mouse, but other than that, no real difference. . . UNTIL YOU BEGIN TO TRY TO USE IT.

Too inaccurate to have anything great about it

Inaccuracy; ; ; it never hits the target.

Can I please give this a zero rating? I feel dishonest giving it one star. It rarely works correctly, I am actually surprised when it does. The keyboard is garbage. Will stammer and stop, miss keys regularly, repeat keys regularly, need to be pounded on to get the letter to appear, need I say more?

Rarely do I bother doing reviews but as a long time computer user, this mouse is just brilliant. No issues with it, a pleasure to use and ridiculously long battery life, this thing lasts about a year on standard batteries.

Logitech products are able to interoperate using one receiver to connect to multiple input devices. This allows you to trade out a mouse or keyboard and continue to use the same receiver to save the USB ports. The mouse also has incredibly long battery life. Great value for the features offered.

I bought this mouse 3 days ago, and since i′ve to trying to make it work properly with no succes at all. I′ve read tons of support blogs and 90% of the people complain about this mouse.

Ergonomics

Works incredibly slow/mind blowing inaccurate tracking/expensive for such a bad mouse

OK overall mouse. My only issue is the scroll wheel is very loose. When I finish scrolling, it usually continues to roll the screen so I have to grab it again and move the screen back where I want it and hold it in place.

Fast Response; Glides Smoothly; Great Features; Works On Any Surface

Inaccurate Tracking

I like the mouse and it is very accurate for what I use it for - general business applications - but I was surprised that it is not Blu-Tooth. This means that I have to use one of my USB ports for the mouse receiver. This is not a show-stopper, but I'd rather have more ports than fewer.

Extremely stylish, great features, really comfortable. I can't find a single flaw in this mouse.

I own 4 Logitech wireless mice between work and home. This one is nice because of the larger size/ergonomics. Also, it has a lot of assignable buttons and the unifying receiver is a plus. However, the right and left main click buttons have a lot of slop/creep in them.

Yes, I would recommend this to a friend

Accurate Tracking; Fast Response; Glides Smoothly; Great Features

Limited Surface Compatibility; Uncomfortable Design