Pros below: Compared to G502: - Pleasant to the touch rubberized ribbed wheel. Does not play, does not rattle - The sound of pressing the wheel is pleasant. Not plastic, noisy - Tactile side keys are slightly better distinguishable - The mouse is lighter and glides much better on the mat Its cons: Compared to G502: - Fewer function keys - Loud and tight main keys. For esports players, this is the norm, but for everyday work on a PC, this is inconvenient. - The side recesses are not so deep, the fingers do not lie so comfortably, but huddle like on the edge of the bed - In free mode, the wheel rotates less time (due to less weight). Scroll more often