There is a specific kind of mouse review moment I want to describe. You take the Superlight 2 out of the box, you slide it across your pad for the first time, and you immediately think: this is just my hand. There is no mouse. The 60 grams and the PTFE feet and the symmetric shell have arranged themselves into a thing that is so out of the way that the cursor feels like it is being moved by intent alone. I have used a lot of mice. Maybe four of them have done this. The original Superlight was one. This one is another.
The Hero 2 sensor is the upgrade that justifies the version number. Tracking is cleaner than the original Superlight's already-excellent Hero 25K, sharper at the edges of fast flicks, less prone to the tiny inconsistencies that you only notice in slow-motion replays. Polling doubles to 2000Hz, which is the kind of spec change that you cannot perceive in isolation but you can feel in aggregate. After two weeks of daily use my aim was measurably more consistent on tracking maps. Confirmation bias is a real thing. So is a better sensor.
Weight is the other half of the story. Sixty grams is three lighter than the original, and the difference is the kind of thing your wrist notices at the end of a long session rather than during a flick. The shell is symmetric without being aggressively shaped, which means it works for claw, fingertip, and a relaxed palm grip in equal measure. After two months I still have not made up my mind about which grip I prefer with it, which is the kind of indecision only a genuinely neutral shape allows.
Battery is 95 hours at the higher polling rate and longer at 1000Hz, which means I charge it twice a month and never once think about it during play. The dongle ships with a USB-C adapter, which is the small civilized thing Logitech has not always done. The included paracord cable is soft enough that wired play doesn't fight you, though at this weight you wouldn't want to play wired anyway.
The Lightforce hybrid switches are the underrated part. Optical-mechanical means no debounce-induced double clicks over the long haul, and the click feel itself is firm without being heavy. After two months I have had zero stuck or chattering inputs, which is more than I can say for some of the optical mice I've owned that traded reliability for novelty.
The scroll wheel is the one piece of the mouse that feels cheap. It rocks slightly side-to-side when you press it, and the notches feel hollow rather than crisp. For weapon swaps and minor scrolling it is fine; if you bind anything important to the wheel click, you will notice. The side buttons are also a touch small for my thumb, though the placement is right.
No Bluetooth is a real omission for anyone with a dual-PC or Mac+PC setup. Logitech's argument is that Bluetooth adds latency the audience doesn't want. They're right and it's also annoying. The $159 price is the other gate. There is no version of the value argument that makes this a deal. You are paying for the best tool, with no compromises in the direction of versatility.
Verdict: Buy this if competitive FPS is the reason you bought a gaming PC; if you also want it to be a productivity mouse, you are shopping in the wrong aisle.