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This printer is very good value for the money. It prints well out of the box, has a good user interface and responsive touch screen, and a solid frame. The filament stop sensor works fine. I have used it several times to change filament when a spool runs out. I have not had a chance to test the power loss function. I have printed almost non stop with the printer since it arrived on 13.04.2018. Some reviews point out that it has an old Marlin firmware which does not home the Z-axis slowly on the second tap. This one is improved. It first homes Z quickly and then homes slower for the final measurement. There's one bug in the firmware. Sometime when I want to change filament it either doesn't pull the filament out or doesn't pull it in. This has happened a couple of times. Nothing happens and the extruder just sits there without spinning, but the progress bar moves as if it's running the motor. It works the next time I try. Mine arrived with slight shipping damage. The adjustment screw in one corner of the bed had broken loose so I had to glue it to the bed, but it has held up fine. IT does not affect the leveling, and the printer prints straight in all angles. The X-belt was a little loose, which caused the printer to skip a couple of times before I fixed it by installing a belt spring. Also, the X-pulley has slight wobble, which I think is the reason why the belt was adjuster so loose. It would be binding if it was tighter without a spring to take up the slack. The hot end cooling fan starter howling when I turned the printer on a couple of days ago so the bearings are probably shot. It should last much longer than a few weeks of printing. Minor problems for me. I bought the printer to make a big EDF jet model. I attached some photos of the prototype jet being printed.
I am very happy with the product. Delivery was quick. I have only one complaint: The software included on the flash-drive is faulty and could not be installed. It gave me error codes when I tried to install it. I found a place on the internet where I could download the software and the problem is now solved. The software is working fine. This is a great product and value for money! Johan