What mouse do you use?

I use an Evoluent vertical mouse. It is a high dpi mouse, but the position is not as precise as a regular mouse overall since you basically move it from the elbow instead of the wrist. It has two features that I love:

1. It has 3 distinct large buttons AND a wheel, so I have the best of both worlds with a real Middle Button. This requires running a separate button remapper on x64 which is a free download

2. I can use it for hours with no wrist strain or irritation

With enough practice the precision is not a problem.

http://www.evoluent.com/ 

Evoluent here as well.

Best mouse I've ever had. 

Standard Dell 7 button.

My Evoluent is gathering dust.  For me, it's extra buttons aren't easily accessible.  With my dell I have easy access to 3 extra buttons (left wheel tilt, right wheel tilt, thumb in addition to left/right/middle). Also, I found the wrist position to be stress-building over time (then again I only used it for a week - maybe this goes away with extended use???).  

 

I've been using the same model 3-button IBM mouse ( made by Logitech ) 7 to 8 hours a day for the last six years,  with no ill effects. It's plain, simple and just keeps on working. My fingers have grown so accustomed to the three large buttons that even though I've tried 8 or 9 new input devices over the years, I always come back to this one.

 Jim

Just remembered another funky deal when I switched over to the Evoluent.  In order to use the scroll wheel, the window had to have focus.  With my dell mouse, I can scroll in a window simply by mousing over it.  I pity the mouse software company has that has to design for subtleties such as this, but I think that was the last straw for me.