Hey guys, I was wondering if anyone with a 2011 model who uses it with an external display could chime in with their experience. I'm considering picking an 11" up that I'd love to hook up to my 23" 1920x1200 ACD, but I was curious about performance. Is there any noticeable slowdown extending the desktop to such a resolution (compared to not using an external monitor at all)? What about playing a 1080P film on the larger screen? Obviously playing games would take a considerable hit, I wouldn't consider it. (But if anyone could chime in with the likes of, say, Warcraft 3, I certainly wouldn't mind!) Thanks!