best monitor for computer

A variety of display options are available these days with different dimensions e.g. 14" , 15" , 17" etc. 

Although it a person decision which screen size suits your requirements , One needs to make sure before you go to purchase a PC is that which applications you are going to use and what is the advantage for you if you choose a big display.

It is also important to keep in mind the display result resolution & graphics quality when you will make a decision.