Lately, I've also been cleaning up my old Black Legion army, like I said. I haven't bothered repainting anything, even though the models really need to be touched up a bit-- there are just too many of them for that. I have been rebasing them, though, and I have painted up the Dark Vengeance contents to go with the old army-- just with much cleaner highlights and sharper detail.
Three Chaos Space Marine squads:
And a forgefiend. I have another on my desk waiting to be painted. It's hard to say which my favorite item out of the recent Chaos release was-- it's a toss-up between the Forgefiend and the Warp Talons, since both are awesome models that are also great in-game.