The board is verry capabile, good thermal disipation, fast processing and lost of posibilities. I have the GTR with the M5 that provide all the connections needed for a 4 stepper self leveling bed, and a double extruder 3d printer. Usually people go for duet boards for this kind of projects, but my printer works just fine (the problems i have are not motherboard related) so its a verry good place to save some money. The only reason that i only give this board 4 stars is that i can not load firmware directly via the USB B port and i need to use the sd card. Great board, great team at biqu, i have recived products that were wrong or with slight issues and they did not hesitate to replace them.