This is our best GPS module, and significantly outperforms the Mediatek GPS due to the larger antenna and next-gen chipset. Recommended for multicopters and rover in particular, where GPS accuracy is paramount. The device itself is pretty straight-forward. It has active circuitry for the ceramic patch antenna, rechargeable backup battery for warm starts, and I2C EEPROM for configuration storage.
The units will ship pre-configured for ArduPilot Mega use, and the configuration file is available in the repository.