My current one is being very dodgy recently, but it is a few years old, so I am going to buy a new one soon.
I currently have a Logitech Cordless trackman FX.
I have got used to the feel of a trackerball and I do like not getting a sore right trapezius muscle after extended gaming sessions.
So, I was thinking about a Logitech® Cordless TrackMan® Optical for the reasons above.
But for the same cash I could get the superlative Mystify Razer Boomslang 2100
Thoughts?