Paper choices

So, my question of the day is what type of paper does you use? By this I mean the most common copy paper that you have. We use Domatar Imageprint. 20# 98 brightness, as our common house stock for copies and such. this stuff costs me 8.50 a thousand, which I thought was a good price, till I walked thru staples and saw their paper for about 4.25 a thousand.. Does anyone use this stuff? Is there another option besides what I am using that is cheaper but still good enough for the quick copy market?