I would recommend Staple's Multipurpose paper. Great paper for use in my laser printer. I like the 96 brightness level. This is the paper of choice for the volume of work I produce.
What can I say....its paper and it works well in my printer and dmy kids have no problem drawing it! I love it when I get it real cheap b/c of rebates and coupons!
As it's name indicates the Staples Multipurpose Paper is truly multipurpose. We use it mainly for printing but use it for sketching as well. My husband likes to design and build and uses the paper to do a quick sketch. It is great quality and well priced.