If the two wires don't bother you, I would go for the 900NF unless of course you are using the monitor only for text like word processing. The 900NF might run you $40 but the colors are better and it has a higher max resolution and refresh rate. I'm not really sure about picture quality but like Yucky said, text will be crisper on the 900IFT though that is not to say the 900NF's (or most AG's) text is bad.
[edit]Fixed small mistake.[/edit]