I totally agree! The wheel scrolls perfectly with a slight clicking feel, yet you can still push it down as a button to activate another command right there between the left and right click buttons. How much more convenient could it be? AND..after it 8 yrs of hard use, it NEVER failed on me. Take that for what it's worth to you.There's nothing wrong with the mouse wheel. It's great actually. If you liked the feel of the original MX518 wheel you will be good with this one. Doesn't "Blow chunks" by any means... I prefer its stiffer steps to the sloppy ones (coming from a g403).