I used two cases of Hammermill (back when you had a great price for the case) and had no jamming issues. First ream out of this most recent Staples brand paper and it's jamming every 10 pages or so. Will not buy this again.
Although I prefer to use Staples' 100% recycled paper we decided to take advantage of a sale and chose this Multipurpose paper instead. It's been great. Very nice and bright.
This paper is perfect for my office. It has good weight and feel to it and just the right amount of brightness. I also see this box of paper on sale frequently and is by far the best value for everyday office and personal use.