23" ACD screen better than iMac 17" G5?

[iRhyknow]

I am really close to buying a 23" ACD, will it be any different than my G5 iMac screen? Brighter, higher res, just plain prettier picture?

I'm looking for anything to push me over the buying edge .

 

[xUKHCx]

23" vs 17"

The 23" has a larger screen
1920 x 1200 vs 1440 x 900
1080 HD vs 720 HD