When it comes to paper is all paper the same? I really do not have any idea. I typically purchase a case at a time and only really consider the price at the time of purchase. In this case it was a no brainer for they were almost giving it away. This is my second box and the first was used without many problems. I did notice that sometimes the paper would jam in my printer. The issue could have been my printer or it could have just been the papers sticking to each other. To resolve that issue prior to loading the paper in the printer -- I fan one side of it. Once I started doing that -- the number of paper jams went down to a point where I do not recall a paper jam in the past few months. I now have a new printer so time will tell if this is the case with the paper or my old printer.