I've been wanting an external monitor to pair with my 13" MBP (Late 2010) and so today I finally plopped down the cash for one. It's nothing amazing, an HP LED 23" (2311x), however the results are not what I had expected. When I have it set up with the HP as a separate window, it has a great picture and fills the entire screen. However I intend to use it in mirror mode 90% of the time and when I do that it looks terrible. In 1080p resolution it bars the sides of the screen and everything is in grandpa mode (super large). In 720p it fills the entire screen but it's again in grandpa size. Is my MBP not capable of doing what I want it to do? I really hope not as I've been looking forward to this for ever now. Say it ain't so?