I would say something like this
http://www.redflagdeals.com/forums/s...d.php?t=706506
Would be perfectly fine and also come in on economy ($81.62) and size (will fit in cheaper smaller form factor systems for education, even Dells/HPs, etc.), and noise (low profile, low heat, tiny cooler, tiny fan. Best of all, it has all 3 video outputs you would need, VGA, DVI, and HDMI.