Best Monitor for old Mac G4?

I want to purchase the largest flat screen monitor for my old Mac G4. I
need quality, because I am a graphic artist.

Can anyone recommend what I should shop for? I don't know about all
the specs I should keep in mind.

Here is what I have.

Thanks for your help.

Machine Model: Power Mac G4 (AGP graphics)
CPU Type: PowerPC G4 (2.
Number Of CPUs: 1
CPU Speed: 400 MHz
L2 Cache (per CPU): 1 MB
Memory: 768 MB
Bus Speed: 100 MHz
Boot ROM Version: 4.2.8f1