If you have seen Fate/stay night then I hope you watch Fate/Zero as well, cause it was amazing. I think it was pretty much more rough then Fate/stay night, but none the less satisfying. The ending of the second season may make you sad or even cry, and the anime might do that as well. The art is fairly different then it was in Fate/stay night, and I can say I really liked it. The roughness of it reflects on the characters being adults and not children, so it is not that much of a surprise that there will be more blood and other stuff. The story is kinda the same if you are looking at the Holy Grail Wars, but different if you look at independent characters. Overall a great anime that is totally worth watching if you have already seen Fate/stay night.
Memorable quote from this anime: "You saved them, but you never led them. You never showed them what a king should be. You abandoned your men when they lost their way. Then, alone and untroubled, you followed your own petty little ideals. Thus, you are no true king. You are only a little girl, enraptured by a false idol of the king who serves others, but not themselves."
