Anyway, just caught up to Episode 3 and I wanted to share my first impressions of the various Masters and their Servants
1. Lancer/Kayneth Archibald El-Melloi
The Master is a scumbag. It took me a few moments originally because I didn't know the characters' names yet to decide why I instantly hated him upon hearing his voice. Then I learned his name and the "Archibald" clinched it - Kayneth is voiced by the very same seiyuu who voiced Archibald Grimms in SRWOG: The Inspector.
As for Lancer. Holy CRAP, where to start! He's voiced by Hikaru Midorikawa, for starters. Plus the dude DUAL-WIELDS SPEARS. He hasn't yet shown us how much arse he can kick with those, as Ep3 ends with his bout against Saber just about to begin. (Hang on, wasn't Lancer the first opponent we see Saber engaging in the original FSN too?)
More than that though, I get the impression that as much as his Master is scum, Lancer himself is an honorable fighter, moreso at least than his successor in the previous two works. Unfortunately we know going in he's going to die.
2. Tokiomi Tohsaka/Archer
Well, Gilgamesh is a known quantity, so I won't spend too much time on how he's an arrogant, egocentric jerkoff. He was pretty cool when he Gate-of-Babylon'd Assassin in ep2, but he's still a jerkoff. (Come to think of it, so was the original Archer - just not as much)
My immediate reaction to his Master though was something along the lines of "Holy crap it's Aizen!" - and he really is a conniving bastard, too. I'm curious to see what happens to him. That said, he's a smooth SOB. As villains go, I like him.
3. Kotomine Kirei/Assassin
Again, Kirei's a known factor so I won't waste my time on him. Assassin...they're creepy. Really creepy. The chick's kind of hot, but still the whole lot of them are just creeepy. IMO they better fit the Assassin archetype than the one in the original FSN, but I liked him better
4. Waver Velvet/Rider
The Master's a pansy. I mean come on, even his name screasm "PANSY!!!!". And he makes 00 S1 Saji look badass.
Rider...kind of annoys me, but he's hilarious. Haven't really seem him do much besides stuff his face and watch war flicks on TV, but he's got a kickass chariot(pulled by, of all things, oxen). He's such a big dude that I kinda look forward to seeing him fight somebody.
5. Uryuu Ryuunosuke/Caster
"complete psychopathic monster" doesn't even begin to scratch the surface of describing these two. They've only been in one scene, and it involved the massacre of an entire family. I get the feeling this guy(the Master) kills for kicks. And the Servant's worse.
6. Matou Kariya/Berserker
As yet we've seen almost nothing of Berserker, as he was visible only a moment at the time of his Summoning and has not appeared since. As for Kariya...my GOD. I'm at a loss for words - it's like every time he's on-screen I feel like I'm being kicked in the gut. Poor guy.
7. Saber/Emiya Kiritsugu/Irisviel von Einzbern
Again, Saber is a known quantity, so there's nothing I'll say there.
I'm going to be honest, Ilyasviel was one of my two least favorite characters in the original FSN anime. Her mother though is a totally different story. Kiritsugu I don't really like much, but her I do and to me it's just heart-breaking to watch her knowing that she'll come to a bad end.
Overall I liked Rider, Caster, Archer, and Assassin better in the original Fate/Stay Night, but so far I prefer /Zero's Lancer. Saber's the same obviously, and for now I'll reserve judgement on Berserker.