There is still banding in games with the 2007WFP. They only fixed banding on the desktop.. If he wants a gaming monitor he needs something different. If you're connecting through VGA I'd try the LG L204WT.
The Dell uses a different panel than the other two (can't think of the exact one) and a 16ms on that panel is equal to a 8ms TN panel. The Dell is fine for games.