Xbox 360 VGA cable resolution settings for my viewsonic 16:10 monitor

My 19 inch monitor has an aspect ratio of 16:10 with a maximum resolution of 1440 x 900. What resolution would be ideal? I want the best possible resolution. The choices closest to my monitor's resolution is (1280x 720 at 16:9), (1280x768 at 16:10), (1280 x 1024 at 5:4) and (1360 x 768 at 16:9) and (1920 x 1080). Should I go with the matching aspect ratio at 1280x 768 or should I pick the highest resolution with a 16:9 aspect ratio? Will my monitor upscale it to match? Thanks.

 

(1360 x 768 at 16:9) this one.

 

if the xbox game runs in 1080p, pick 1360x768
if it runs in 720p, pick 1280x720

 

I'd pick 1280X720. Approx 95%+ of 360 games are rendered at this resolution. If you pick anything else, the image will be scaled. Possibly introducing scaling artifacts and aspect ratio problems.

If you pick 720p (and you're using of the 95%+ of 720p native games) the image won't be scaled (assuming your monitor is doing 1:1 mapping)

If you want the monitor to "stretch" the image to fullscreen 1440X900 (non 1:1 pixel mapping,) then 720p makes even more sense as any other setting will cause the image to be scaled twice--Once by the 360, once by the monitor.

 

Thanks for all the responses so far. Can anyone clarify why a certain resolution would go with a 16:10 monitor? Thanks Tony A, do you think GTA IV is still rendered in 720p? I tried using the resolution you recommended and it is no longer full screen. It looks like it is shifted to the left 1 inch too much because my radar in the game is slightly cut off. Anyone else can explain? Thanks.