I'm looking at Apple Online Store: http://store.apple.com/us/browse/home/shop_mac/mac_accessories/displays?mco=MjMwMzAyNDI and I'm trying to figure out which adapter I should get. Would Mini Display Port - VGA be best? Also which one would allow me to run the laptop in clamshell mode. I assume all of them would, but I just want to be sure. I currently use this monitor : http://www.amazon.com/Dell-2408WFP-UltraSharp-Widescreen-Definition/dp/B0018LJYFC and it accepts, VGA, DVI, Displayport connections. I am actually currently looking to upgrade my monitor as well. I'm looking at 24-27 inch monitors, but their resolution is like 1280 x 1080, as opposed to 1280 x 1200 like my Dell one. Seems ilke it would be a sidegrade?