Whats the difference? Obviously the resolutions are different. But both are widescreen no? Is one better than the other?

It depends on your monitor and the type of work you do. Obviously one has more "real estate" in the sense that you can have more space on the screen. Try each one and see which one you prefer.

Yes, both are widescreen resolutions. 1920x1080 (16:9 aspect ratio) is an HDTV resolution. Few PC monitors run at this resolution. 1920x1200 (16:10) is the resolution most commonly used with 24" (and larger) computer monitors. It obviously has a bit more vertical resolution than 1920x1080, which can come in handy if you do a lot of work in MS Office or any Adobe application. "Is one better than the other?" 1920x1200 is best for "normal" computer use. The higher pixel count allows you to cram more Office toolbars on your screen without cutting into the document area. 1920x1080 is the best resolution for a home theater PC driving a big screen TV--no horizontal black bars during movie playback (for 1.78:1 flicks, anyway). Super P3-Now with Blu-Ray playback! PIII-S @ 1.66GHz 2GB PC2700 AGP HD3650 LiteOn BD-ROM Homebuilt 1080p projector w/ Pixelworks HDMI controller JBL 5.1 audio

In addition to the above correct info it wasn't mentioned that for best viewing you should use the NATIVE resolution of the display in question.

You might interpret 'best viewing' as having the most accurate proportions. In other words, using the native resolution means the picture is not stretched or shrunk vertically or horizontally to fit the screen.

less It would have been helpful if you had clarified wheather you were asking about computer displays or TVs. I assumed computer.