The long gaming sessions where a joy, with no aches or issues. As I mentioned earlier, I’m generally not a fan of gripping pads, AKA flanks. Here on the M550, you are aware of them but they are very smooth and comfortable, they certainly do as intended and offer fantastic grip. Scrolls wheels can make a break any mouse, either tough, stiff, loud or to loose. The M550 has the balance just right, resistance is smoother and judder free, and silent!