1. I was a little let down by the extra keys on the LMB in terms of the mouse's ergonomics. The painting itself turned out to be narrow, and these extra keys can be inadvertently depressed if the mouse is not held in the manufacturer's recommended manner. The mouse is ideal for a "claw" hold, which uses only the fingers and not the entire palm. My palm is huge, so I typically hold the mouse in a "claw" grip with my thumb and little finger on the sides, my index finger on the left mouse button, my middle finger on the wheel, and my ring finger on the right mouse button (an old habit from three-button mice, including those from the G600). This finger configuration places the index finger on the edge of the LMB and add. buttons, which are also on the same horizontal level as the LMB and are convenient for squeezing together during a combat. The only convenient "claw" grip for this mouse requires placing the ring and little fingers on the right side, and pressing RMB with the middle finger, which is unfamiliar to me and not practical.
2. A metal wheel with quick scrolling capabilities. I'm just baffled as to why a dedicated gaming mouse would require a quick scrolling browser feature. In contrast to another button that is located behind it and has the ability to be programmed, the wheel lock button itself strongly protrudes from the body. Pressing this button, however, is very inconvenient because the protruding up key for fixing the wheel in front of it interferes. And if you press the lock key while playing, you'll lose since the weapon change carousel will start, adding to your bewilderment about what's going on. The wheel itself is substantial, made of metal, has a few, sizable depressions, is devoid of a rubber coating, has sides that are opaque to the touch, and is moderately slippery (both when tilted left and right and when twisted back and forth). It is still manageable on dry fingers, but when the palm and fingers are just a little damp, using it becomes intolerably challenging.