Pros: I have had sever wireless mice from various manufacturers over the years and none I have liked quite so well as the M325.

One of my favorite things about the mouse is the smooth and quick scrolling capability of the mouse.

I know many people claim to hate the scroll wheel on this mouse and that is enough for them to hate the mouse as a whole but I am one who doesn't keep a finger always on the scroll wheel when using a mouse. I rest my pointer finger on the left button and my middle finger on the right button. I shift my pointer to scroll when needed. People who use a mouse this way should have no issues with this mouse.

Since I am someone who likes to skim through lengthy documents and pages of code (since I am a programmer) a scroll wheel any less sensitive seems painful when reviewing lengthy documents.

I also like that I can give the scroll wheel a quick flick and it can fly quickly through a few pages.

Also, the mouse seems quite sturdy and well constructed, and I have never had issues with the wireless cutting out or the mouse movement being anything less than smooth.

The optics of this mouse are great too! I have a desk with a shiny surface on it at home and most other optical mice I have had need a mouse pad to work on it's surface. Not this mouse! It is the only one I have had that works great on the desk's surface.

Overall, I love this mouse so much I have bought 2 of them for myself, one for at work and one for at home, and one for my sister to use with her laptop.

Oh ya, one more thing:
These mice are great for laptops!
...and it has a great battery life.

Cons: Nothing...
There is seriously nothing I would change about this mouse.

Other Thoughts: As the title of my review states, to each their own.
Maybe this mouse isn't for everyone, but to the right people this is one amazing mouse.

Pros: You can replace it with something else

Cons: The M325 scroll wheel is terrible. It is way too sensitive. It makes the mouse uncontrollable and unusable.

Other Thoughts: I phoned Logitech and complained and the lady said "no problem", they would give me a refund and send a prepaid shipping box to return it. Feeling better about Logitech, I went out and bought another Logitech mouse to replace it: the M317 which is about the same mouse with a normal scroll wheel. This one is acceptable so long as you don't use the Logitech Setpoint software.
(The M325 is unacceptable whether you use Setpoint or not - it just becomes more unacceptable with Setpoint.
The problems with Setpoint are a whole new topic.)
But then I got an email back from Logitech saying they could not give me a refund on the M325 because I bought it on the internet, never mind it was new in the box.
So I offered the M325 as a free gift to a couple of people but nobody wanted it so I threw it in the trash.
In future I will avoid all Logitech products. Their software engineering, hardware engineering, and customer service departments have all become detached from reality.

Pros: Good form factor and size.

Cons: Scroll wheel is terrible.

Other Thoughts: I bought this mouse to replace my logitech m305, for which I lost the receiver. Unfortunately, I cannot get used to the supposed benefit of micro-precise scrolling. The wheel offers me almost no resistance when scrolling, making me feel as though my finger is resting on a marble sitting on a sheet of ice. My muscles get tired just trying to keep my finger in one place. Middle-clicking on links becomes difficult, because my finger might move slightly as I'm pressing down, and all of a sudden I have scrolled above or below the link I wanted to middle-click. At the end of a day of using this mouse, I feel extremely irritated, as though I have been forced to walk around all day with a pebble in my shoe. Using this mouse will make you appreciate the value of having fewer notches in your scroll wheel.