these are all flatscreen, yea? so we're not talking about that much space. and 20" isn't exactly a small monitor. the space in the middle is not a problem at all, ime.

like i said, i thought lots of games were supporting multiple monitors these days, which I think would be really freaking sweet.

also, if we are talking about games, you might want to compare response times on the two. bigger monitors tend to not do as well in this area.