Product review (3 stars): save the box
As some have stated, some units make a loud banging sound when compressor kicks in. The first one I received had this problem, luckily I had not disposed of box to return it. The noise would occur intermittently at first and after a week of use, would not stop, no matter how much effort was put into trying get it perfectly level. The replacement I received works just fine with basic, crude levelling adjustments of front legs. I have even tilted the freezer partially when it is running to try and see if this one makes the same noise when not perectly level,  and it it never made the noise. Note, I don't think they have to be perfectly level, I just think it luck of the draw to get one that's not defective.