The first story, "Dead Billy Dead," written by Steve Niles and illustrated by Kody Chamberlain, is pretty good. The story is nothing great, but it's entertaining, but the art really stands out. It's very moody, with deep shadows and gorgeous coloring. I'd give it an "A".
The second story, "Juarez," by Matt Fraction and Ben Templesmith, started out great but completely becomes incomprehensible towards the end. This story is more complicated than the first one, and I respect that, but it's told in eight parts, the first six of which were really good, but the last two of which makes no sense at all. Overall, less enjoyable than the first, although I am a sucker for Ben Templesmith's artwork. I'd give it a "B".
It's not great, but good enough entertainment. Kinda expensive though. So you might want to skip it. Fun, but not good enough of a value.