I consult a lot and often have to check the accuracy of the machine, which starts with good alignment. Carrying an accurate spirit level and box on an airplane is tiring, and customers often lack the right equipment. It's much more versatile and easily packs into my laptop bag. I also like the insulated soft side case better than the hardwood case. I have no other problems using it and setting it up as it is very easy to use. Also saw a comment about the need for calibration. Note. I always calibrate/check the mechanical level before use, so I will do the same with this level. Just common sense.