I've been a fan of the Fate/Stay Night series ever since I first checked out how the series started, which was an adult visual novel (18+ due to sexual content). And I didn't really like the anime that much because of how it pretty much just combines the different stories from the visual novel. I didn't really like Unlimited Codes, but then again I'm not a big fan of fighting games. When I heard about this manga coming out, I was a bit hesitant to buy it, which was surprising considering how much of a Saber fanboy I am...
I decided to finally go out and buy it, and it didn't turn out to be as bad as I thought it would be. It's pretty much the first few episodes of the anime (or the first few "days" in the visual novel), and it stays quite accurate, the only difference is that it's condensed, which is something I liked about this manga. I'm not going to discuss the story in this review, just to help prevent spoiling it.
As a Saber fanboy (well, a Rin fanboy too...) who's been following the series for a while, I was happy with how this turned out.
If you're already familiar with the story of Fate/Stay Night, then there isn't anything new here.