I have had the tv for almost a week now. It's worth noting that the default tv settings do not seem to correspond to the colors in the original recording. In fact, while watching various DVDs, I felt that the colors were off since they seemed unnatural. After an extensive google search and playing around with settings, I finally settled on a very detailed description on how to re-tune the settings. The link is:
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You will need to access the service menu, which can be done with the (Off, Mute, 1, 8, 2, On) combination on the remote - note that the (Off, Menu, 1, 8, 2, On) combination mentioned in the link is incorrect. I have applied the settings mentioned in the link, and now the dvds look INCREDIBLE! I highly recommend the new settings.
Also, please access the service menu at your own risk, since some of the forums warn that it might void your warranty. Also, be very very careful while navigating the service menu. The link has further instructions about that.
The reason I am giving the tv a 4 star instead of 5 is that the audio quality is not as high as the video quality. I would advise pairing the tv with an external speaker system.
Hope this helps.Get more detail about Samsung LN37B550 37-Inch 1080p LCD HDTV with Red Touch of Color.