The voice acting is quite good. The actor who's voicing Zack has it about right, as far as I'm concerned (as in, I'm not revoicing lines to make them sound like how they should in my head too often). Mind you, they've changed the voice actor for Aerith *again* (this girl has a different voice actor every damn time they put her into something, I swear - the only one who's had more is Yuffie, who also changed in this game. At least with Yuffie it's justifiable - she's only supposed to be about nine). It's weird though - Zack's tenor while Cloud's baritone, and my head keeps insisting it should be the other way around!
The other thing which gives me giggles is seeing all these monster sprites I've already seen in Dirge of Cerberus, and realising Vincent got a raw deal. I really want Squeenix to go all out and pull FFVII into "better graphics yayz!" mode, if only because it would be so much *fun* to see how much meaner the monsters get!