Anybody with experience with the current Mini and a 27" Cinema Display or Dell U2711 running at 2560x1440. I know that the Mini CAN output to this, but how well? I've read reports that moving and resizing windows is often choppy. Obviously, gaming is out of the question for the most part. But can it handle Expose at full framerate, smoothly move windows and play 1080p video without stuttering?