whats the point of 8200dpi? wouldnt that make your mouse move extremely fast? I have the m60 and I use it on the lowest default dpi setting.
Realistically, marketing and nothing else. Your resolution would have to be enormous with a sensitivity bordering on absurdity to ever need it. Like 5760x1080 at nearly 2 inches / 360.
Also I've had both hard and cloth pads, and don't see the point to hard any more. QCK+ is cheap, gigantic, smooth as shit unless you're grinding like 20 pounds of cheeto dust into the fabric every day, and won't do a thing to your mouse feet.