There are two monitors that I'm debating on buying. Both are Full-HD, LED, 1920x1080 resolution, 50,000,000:1 contrast ratio, Asus monitors. The difference between these two monitors is that one (duh) is 21.5 inch and the other is 23.6 inch. The 21.5 inch is 5ms and the 23.6 inch is 2ms (I DON'T care about the 3ms difference, just thought I should include that info). Lastly, there is a $20 or so difference (of course, the 21.5 inch is the cheaper one). So which one should I go for, for gaming? Is the extra 15 sq inch worth the extra $20? Note that I am on a budget!!