Been playing my vita copy of ffx since last night. Wanted to try out the ps3 copy but I only got my package literally minutes before I ran out the door to go on a a little vacation, so I can only talk about the vita one. From what little I've played so far, the game looks great. As others have said, really crisp, the characters looks very nice most of the time. I wish they could've done a little more work on getting the mouths to sinc with the characters voices some more though. The remix tracks aren't terrible but it's very noticeable and can be a bit off putting at times, at least it was for me. But also I'm starting to grow to them. I'll have to see what my final opinion is as I get more into the game. Game runs great on the vita. No problems what so ever. Even the occasional load screen is quite quick. It's just as fun as it was on ps2.
Overall very very very happy with the remake so far. I still can't believe I'm playing this on a portable. With this and Bravely Default for the sequel being my christmas presents this year, it's going to be a fun week for me game wise.