If there's a downside to adding touch capabilities to your shopping list, it's price: the technology adds around $100 to the price of a 22- or 24-inch monitor. On the other hand, once you start tapping, pinching, and dragging, you'll wonder how you ever got along with just a mouse.
Okay, those are my picks. What features do you consider essential in a business-class monitor? While you're mulling that over, check out my guide to connecting a second monitor to your PC, and this video on how to set up multiple monitors.