Logitech G903 LIGHTSPEED vs Logitech G502 LIGHTSPEED

The Logitech G502 LIGHTSPEED and the Logitech G903 LIGHTSPEED are very similar. The G502's design is a bit more ergo-shaped, thanks to the thumb rest, but its large body may not be well-suited for smaller hands. Performance-wise, it has a slightly better sensor with a wider CPI range and practically no CPI variation. It also has three side buttons, including a sniper, and two additional buttons on top of the left click, whereas the G903 only has two side buttons. That said, the G903 has an ambidextrous design that should fit most hand sizes using any grip style except for smaller hands with a fingertip grip.