Nice bright paper like the 24 lb for a little extra thickness. Should go for 100% recycled but 50% is a start. The less recycled probably allows a cleaner white color.
Our Xerox copier can be finicky with paper brands especially other store brands which cause jams and frequent repairs. This Staples brand paper is the ONLY value brand we have found that works in our machine without any problems. The quality is great as well.