I use a gaming mouse. It is great. I use a logitech mouse. Things that I really life about it:
1- It has internal memory so I can go to a new computer without having to reset everything.
2- fast and slow scroll. It has a button that you can scroll very fast and then you can switch to slow scrolling. It is great if you want to scroll very fast.
3- Multiple customizable buttons. I have customized 6-7 buttons. For example, I go to the next sequence on CT, MRI or even Xray by clicking the side button. I can change to bone, lung, soft tissue or ... windows using side buttons.
4- Ergonomics. It is great at least for me. I feel much less stress on my wrist and my fingers. If I use a different mouse, at the end of a busy CT days my index finger becomes sore.
In my practice, only a few of us had it at first. Later, we convinced the whole group to buy these mouses and now we have it at all our workstations. So we don't need to carry it with us everywhere we go.