Your choice might depend on your eyes. If you're subject to presbyopia (http://en.wikipedia.org/wiki/Presbyopia http://en.wikipedia.org/wiki/Presbyopia), either

Your choice might depend on your eyes. If you're subject to presbyopia (http://en.wikipedia.org/wiki/Presbyopia http://en.wikipedia.org/wiki/Presbyopia), either due to age or a bad draw in the gene pool, having two 24" monitors lets you angle them to minimize the need to refocus.