I have now an 18" monitor (maybe 19", I don't know) and am confined to limited workspace as I cannot see all the icons. Secondly, experts say that more the resolution better the image quality. So, these are the only thoughts I can think of in terms of the definition 'better'. However, I would also welcome any advice anyone may have, why - for instance - using the bigger one would be more preferable or they're both almost the same, etc, etc.