I backed this on the kickstarter and got mine in the early air-shipping US batches. So far its been a FABULOUS machine to work with.
The only thing I personally find lacking in the software (the slicer) is an auto arrange button for parts on the plate. If I have multiple parts, I have to manually arrange them. If I dont they all just pile on the center of the build plate.
I've had terrible luck with the AI, every single print, regardless of color of filament, has "detected an error" but never looks like anything is wrong, and the print just keeps going, with the red light flashing and a warning on the LCD screen. I think my printer may be in too dark of an area. I've stopped using the AI on the print files, I'm glad its an option. Makes the print files smaller too. If AI is turned on, they are .acode files, with it off, they are normal .gcode files. As an example, a medium size print with 3 parts in gcode is ~16mb, same print with AI is ~45mb, and the AI slices take longer to generate/slice by about 50%.
Overall very minor gripes, so far its been the best 3d printer I've ever owned (I've had and still have many), very easily the simplest and most painless to use. Slightly loud (the extruder fans), but that's the price for the speed. It's become my go to over my partners MK3s and FlashForge Creator Pro.