Keychron M5 vs BM27

The Keychron M5 and Keychron BM27 are wireless mice with ergonomic vertical designs. The M5 is more versatile for either gaming or work. It has significantly better raw performance, making it the better option for competitive play. It also has a second scroll wheel, which is especially useful for horizontal scrolling through spreadsheets or audio timelines. The M5 is noticeably larger and has a ledge on the right side where you can rest your pinky finger. It's a better option if you have medium- or larger-sized hands. By comparison, the BM27 is smaller and better suited for smaller hands.