Sometimes the hardest choices are between products that come from the same idea—and that’s exactly what’s going on with the ZYGEN NP-01S and the NP-01S Ergo. In this video, I compare them from a practical angle: shape, comfort, click feel, sensor behavior, wireless stability, and what they’re like after long sessions. They share the same competitive DNA, but the moment you put your hand on them, the story changes. One feels neutral and free, the other feels guided and supported. The NP-01S feels compact and agile with a low back that doesn’t force your palm, so it works for claw, fingertip, or a relaxed hybrid grip. The NP-01S Ergo adds a gentle tilt and more back support, making thumb-driven turns feel more natural and long sessions easier on the hand. I also break down the weight difference (about 68–69g vs 59–60g), feet setup, click tuning, and the sensor differences—3395 on the NP-01S versus 3950 on the Ergo with an extra “stable/easy control” option that can reduce overshoot without feeling laggy. My takeaway: neither is “better,” they just talk to your hand differently—pick based on how you grip, how you aim, and how long you stay at your desk.