We used Staples brand in our office for the past 4 years & never had any issues we actually submit Legal documents with this paper as well and works fine and the price is great!
The quality of this paper is excellent for every use but what I truly appreciated was the packaging of only five reams instead of the usual ten ream case. I can no longer deal with the weight of te ten ream case but the five ream case is easily manageable.
In an appraiser's office we use a lot of paper even when we use both sides. The Staples paper has proven to be of a quality that fits our purposes and is priced fairly in the stores.