No one will argue that Delta isn't great for upgrades.But their First Class can't compare with Continental's First Class and the main thing is their miles just stink!
For all you delta haters out there, delta upgraded me 3 days prior to my flight to 1st class on a domestic flight on a mileage ticket, as much as you hate delta, that wont happen on other airlines...
How did you get 'em to upgrade you.