Weight and shape decide this, not DPI. All three sensors here track far past anything a person plays at, so the ceiling numbers are not a reason to choose between them.
The Zowie U2 is the one most people should buy: 60g, symmetrical, wireless, five buttons, and a receiver that doubles as the charging dock, so the mouse charges where it lives. Its 3200 DPI maximum is deliberate rather than cheap, since Zowie builds for competitive players who use a fraction of that. The Lamzu Maya X is the enthusiast step: 47g on a PAW3950 sensor with an 8K dongle in the box, optical switches, and battery figures Lamzu quotes at up to 80 hours at 1000Hz falling to about 20 hours at 8000Hz.
The G502 Hero is the budget pick and the honest one to explain. It is 121g, which is roughly two and a half times the Maya X, and modern competitive consensus has moved firmly toward light mice. What it gives you instead is eleven programmable buttons, a proper thumb rest, adjustable weights, and the largest support and spare-parts base of any mouse here.
What we do not cover: the two mice most reviewers name at the top of this category, the Logitech G Pro X Superlight 2 and the Razer Viper V4 Pro, are not in our catalog and are not ranked here. If you want a wired lightweight instead of a wireless one, the Endgame Gear OP1 8k v2 is in our catalog at around 50g with the same PAW3950 sensor.
Basis: manufacturer weights, sensor models and shell dimensions, published reviews from RTINGS, TechPowerUp and PC Gamer, and owner reviews. We have not used these mice. Ratings score each product on the merits with price left out, so the premium pick always sits highest. The tier tells you where a pick sits on price, not how good it is.