I've tried numerous brands of copy paper over the years- some more expensive some less; and by far Staples has become my "go to" copy paper. This doesn't jam in our printers you don't get bleed-through to the other side of the paper and it is a nice "white" color. For the price you can't go wrong with their copy paper! They also have frequent fantastic sales where I stock up. Staples also has their Rewards Program so you're always earning extra points on your purchases which earn you extra spending dollars!
This paper from Staples is a good deal especially if you can purchase it during one of their promotions which sometimes is in the was of a debit card as a rebate.