Repentless isn't as good as World Painted Blood, but I still think most of it is pretty badass. I've always liked their slower material, in fact that's one of the main reasons I've always liked Slayer, because they understood the importance of slow & heavy along with the speed.
That's also one of the reasons I always dug Overkill, the slower stuff like Drunken Wisdom and Skullcrusher.