I haven't played DeS or BB yet, but just running off what I've seen of the lot?
DeS > DS1 > BB > DS2 > DS3
That said, DS2 is actually my favorite of the lot. I'd rank it #1 but I understand the problems it's got.
Hey boys, remember this?
Well I own DeS now.
I was wrong. So very wrong.
It's complete and utter dogshit.
DS2's still the best.