@Kendall: Try to find a B2B Ambush clan for the best payout. Reckoning / Origins and lower 3x promo ebs are fine. You might even try an occasional NML if you happen to find one
You can get nobs by hitting quests. Each one has the same percent chance, which I something like 0.2%. Some say its 2%. Though it's never been totally confirmed of which one it is.