I would like to point out something that the younger people do not think about, well not yet anyway.  When the wide screen was introduced, the physical character size on the screen reduced, because the height of the screen reduced.  When you change the resolution, some characters somewhere on your screen goes out of focus (ghosting?), so changing from the default resolution did not work.  It forced me to go to 27 inch screens to get to a size that does not cause migraines.  So, when you think of changing your screen(s), take your (future) eyes into consideration.