I've seen several links to the NY Times article Meet The Life Hackers mention the benefits of large monitors. Before moving to my current 20" screen at 1600x1200 I tried dual 19" at 1280x1024 but they didn't suit my style of working with Visual Studio. I could not get used to the gap between the screens when I had windows from a single application on both screens (it also didn't help that the machine had been specified with a graphics card which could only support DVI output for one screen and analog for the other; the slight difference in colour rendering was very irritating). 1600x1200 is large enough for me to use Visual Studio comfortably on a single screen but its hardly a big monitor these days. I'd could do with more screen estate for keeping any eye on periodically used applications such as Outlook and Firefox; in particular for looking up something on MSDN when coding. I just saw that Dell are selling some 24" screens with 1920x1200 resolution (£510 plus tax in the UK) and of course Apple have their 30" Cinema Display with a huge 2560x1600 resolution (£1786 plus tax). I wonder how large you can go with a single screen before it is too wide to use comfortably?