I have mainly used Logitech in the past, the last one was a G5. They tend to last me a couple of years so not too bad.
Decided on a M60 based on some good reviews.
Looks are 10/10 (Aluminium chassis and rubbery plastic grip)
Comfort 9/10 (Medium had size)
Accuracy 10/10 (Not much difference from the G5, but the button response is better)
Negatives are the sniper button it too far down the mouse. Also the gliders under the mouse pick up a lot of dust and need regular cleaning.