Hello, I am considering to buy a large screen monitor. I am a programmer and CAD designer. In the past, I used a HP w2448hc 24" monitor. The letter size at a resolution of 1920x1200 was about right for me. I visited several company websites and noticed that at 27" and even over 30", most monitors are at 1920x1080 HD resolutions? How come? I think the letter size look too big in these over 30" monitors.