Staples keeps asking me to review this so here goes. It's paper. It has a reasonably smooth surfce (smoother than some) and feeds well in my inkjet and laser printers even when doing manual duplex. It's aceptably white and considering it's 20lb paper reasonably opaque for duplex work. Laser print can be seen as a faint shadow but inkjet is a bit more visible. This is not really surprising as the ink is absorbded into the paper whereas toner stays on the surface. Either way it's acceptable for most uses although if I wanted to make an impression I'd go for a heavier paper like 28lb or even 32lb paper.
I have used this paper for years. It feeds well doesn't jam is always bright and clean. Weight is good and creates very little paper dust like some other brands do.