Having plugged my MacBook Air (Mid-2012) into a Dell 24" 2410 monitor, the quality is terrible.
For reference the same monitor plugged into a Dell XPS M1330 running Windows 7 via HDMI give nice results with zero configuration.
I found some ICC files and tried them and found things like reds not being bright or strange gamma and contrast problems. I tried suggested brightness and contrast settings and RGB values and reset the monitor back to factory settings.
How do I get the same results or better than Windows or some other arbitrary HDMI device? I want OS X to at least best an upscaling DVD player.