Viewsonic TD2455

Touch screen supports gesture-based finger or stylus use ; Dual DisplayPort connectors allow daisy-chaining of monitors or the addition of a projector or interactive whiteboard ; Stand has an exceptional tilt range

Costly, in a relative sense, for its screen size and resolution

The ViewSonic TD2455 isn't cheap for a 24-inch monitor, but its touch screen, remarkable tilt range, and presentation-friendly features (such as support for daisy-chaining monitors, or connecting to a projector) make it well worth the price for those...