I've been using Simplify3d for my slicing and printing since about 2 weeks after I received my printer and have been really pleased with it's performance. I was never happy with the original slicing software that came with the printer. FYI the latest Simplify3d software revision/update was posted in Jun. The printer/machine choices include the Qidi Tech 1. The only changes I make to the default profile is slightly cooler extruder and bed temps and extrusion rates based on which brand & type of filament I'm using.