MCU Board - WaveShare RP2040-ZeroIt includes a powerful RP2040 with a lot of flash memory (2MB), so you can enable many QMK features and layers without worrying about the firmware size.Easier to solder (for the DIY soldering option)There are very few components/pins to solder. You will need to solder diodes, hot swap sockets, and the castellated holes for the RP2040-Zero.Choc spacingKey switches are arranged tighter than the standard spacing.ErgonomicsSlightly angled sides, with a bigger thumb key.EnclosureThere is an elegant case modified from the original osprey keyboard. It includes a top case, switch plate and a bottom case.FirmwareQMK and Vial are supported. For advanced users, you should be able to use other firmwares including ZMK, KMK (Python-based), PRK (Ruby-based), keyberon (Rust-based) and ZMK.