To be clear, in my review I'm not referring to the lurchy, lightning fast scrolling behavior some users have reported. All that can be adjusted in the system mouse settings and product's companion software.
Size; location; and comfort of side buttons; overall size of mouse; tracking precision
Scroll wheel, scroll wheel, scroll wheel; Two deal breakers here; First, it's smooth as a plastic wheel on a toy train and has no discernible cogs whatsoever to provide that nice, solid tracking certainty every scroll wheel should provide.