I am very satisfied with Staples 20 lb. copy paper. The price is the best around which is extremely important to me I do a lot of printing both at Staples (I have them use the 20 lb. paper for my order) and at home and I never have any problems with it jamming. I've been buying it for years and I think it is every bit as good as Hammermill paper but is a better price. I will continue to buy Staples 20 lb. paper for as long as I use my printer.
This Staples branded copy paper is a great bargain. It is super-bright and virtually never jams in my laser printer. I really like the weight and look of the documents that it produces. I have experimented with several different brands and price points and this paper is for me the sweet spot of price and quality.