Clean, allows me to keep a roll of filament in a dryer next to the printer so I can use the AMS + 1 easily. Most often I use TPU that just sits on a bearing roller and this mount makes it easy to use that “5th” filament. My only issue with the original is that it's not truly adjustable. You have to remove a screw, which will wear out the print and it means I need side access to the “adjustable” part. With this modification, I can easily just reach back pull out the lateral arm, move it up or down to change to the desired angle, and then it sprints back to position. I use a pen spring to keep it in position.