Excellent direct drive extruder! For me, interchangeability of the nozzles was crucial. This makes changing hotends fast and easy. My only beef was with the cooling as it was all from the back side which would lead to the front side of your part getting a bit hotter. The design is holding up excellent in an enclosed chamber that's heated to 50C. All of my parts, including the 94T main gear, have been printed in ABS and driving 2.85mm filament.