Hi Saau. I'm really no paper expert, but, using the proper paper for your art project will definately be a plus. Plain paper is great for doing your quick sketches and layouts for your composition. If you plan to put hours of work into a drawing and would like to sell it later, then using a paper that will last and hold up to discoloration would be the thing to do. Let's say you decided to frame a drawing that you spent countless hours on....you have it hanging on the wall for a couple of years and you notice that the paper is starting to turn yellow with age....not a good thing
Do you get my point? I always use acid free paper and archival inks for my drawings that way they will look good for many years.