D2's are shit, my friend. they come with the springs loose, they make hella noise. Don't waste your money. And they don't go low at allIn fact, out of all of them, D2's allow for the LEAST low-ness. F&F's allowing the lowest.
And by the way: D2's, Skunk2's, F&F -- are all available with the adjustable dampening
edit: i guess to someone who has never felt GOOD suspension (and by good, i dont mean 900 dollar coilovers lol), you wouldn't know the difference anyway :/