Pros: Big and chunky. Adjustable cursor speeds with the "dpi" button. Lovely design.
Cons: The two side buttons become scroll buttons, and the middle scroll wheel of the mouse is reversed (Scrolling down makes the page go up, and vice versa). I tested this on my dad's desktop PC and it worked perfectly though.
Despite the scroll button being reversed and side buttons not working on mac, it is still a very nice mouse and worth the price. Really happy with this purchase.