Short story is my G5 is finally giving up on me after 4 years of use! 
After logitech replaced my entire set of Z5500's for free when they packed up I emailed them about the mouse, the reply was its out of warranty so they can't replace it but I've been offered a 50% loyality discount from their store!
So does anybody have the Performance Mouse MX? How do you find it? It looks extremely comfortable from the pictures.

After logitech replaced my entire set of Z5500's for free when they packed up I emailed them about the mouse, the reply was its out of warranty so they can't replace it but I've been offered a 50% loyality discount from their store!

So does anybody have the Performance Mouse MX? How do you find it? It looks extremely comfortable from the pictures.