Bridgewater is good but he's far from a lock at this point. Remember last year when people thought Barkley was the next Montana?
Barkley is far an away the best prospect of those 3 and I'd put Geno Smith ahead of them too.
Teddy needs a huge year to get into the 1st round conversation.
Manziel has a lot to prove as a passer.
Boyd, if he can build on that incredible performance vs. LSU, could cement himself as a top 10 pick. He also needs a big year.
You didn't mention Aaron Murray, and he is IMO the best or 2nd best on that list right now behind Boyd. If he can gain some weight and have another great year at Georgia, he's a probably 1st rounder.