Lots of great looking dreads here; some quite spectacular. Impossible as it might be to pick a favourite, I intend to do just that. It'll take some time though, so don't hold your breath! :)
As for my dreads: neither of these are new, but new stuff's not the point of this thread, so here you go...
Brother Elias, my first dread. An also-ran in the B&C 2004 dreadnought painting contest.
Brother Stirner, another GD UK also-ran. He was an exercise in converting the plastic dreadnought when it was still quite new. I completed this model just in time for the T/L autocannon option to disappear in C:SM4. So that's already one good reason I have to like the new codex.