And while I can not speak on the DDX I do have 3 Bondtech BMG extruders and 1 Bondtech BMG-M extruder paired to a Slice Engineering Mosquito hotend with 0.6mm Vanadium nozzle. This thing has blown my mind and far exceeded any of my expectations. My only regret is not getting the magnum with the bigger melt zone but I can get upgrade parts from bondtech or slice engineering. I really like the 1 handed nozzle changes. Just stick with the name brands and you will always be impressed with the quality..