Who is the dopest producer in Hip Hop?

I'm sure I'll get a lot of different answers. IMO, it used to be Dre, but no longer. He takes too long putting out tracks. We've been hearing about Detox since 2001. I don't care if I ever hear it. The title now goes to Swizzy. Most of the time I can tell one of his tracks when I hear it, but he has thrown me off a few times especially with Dr. Carter(Lil Wayne). I had no clue until I looked at the credits to know he did the track. Kanye's up there, Dilla(R.I.P.), Premo, 9th Wonder, Timbaland,etc. You do hear him a lot on his tracks which is a dead give away, but he was on Fabolous' Return of the Hustle which was not his track, but Just Blaze's. If someone can give me a reason why it isn't Swizzy, then you'll get the best answer. Like he said, his catalong is a "senior citizen."