I agree with this. I can get why a lot of people don't like FFX, but I've been playing through it the last week or so (pretty much at the end) and its been really fun. I love the battle system, and while it is quite linear for the majority of the game, there is plenty of side stuff to do and when it opens up there is plenty to do. The linear nature of the game also makes sense in the context of the plot, with the whole pilgrimage and whatnot. The sphere grid is cool, because although there is basically a set path for everyone (except Kimahri, he can kind of go anywhere) there are ways to move you characters around all over the place and build them how you'd like. Rikku is a tank in my game.
The voice acting isn't all that bad (don't cite that laugh scene out of context). The delivery is kinda shoddy at times, but for much of the game the characters are rather convincing. I dunno maybe that's just me.
XII is also great and I love it. Aesthetically it is one of my favourites of all the Final Fantasies. Battle system and gambits was a real cool system. Voice acting was great, and the cutscenes were really well done (both in-game and pre-rendered). I do get why there are gripes with the plot but it didn't bother me personally.
I tried to play through VII and I know a lot of people love it and think it has no flaws, but as someone who has only tried to play it in the last few years it aged so poorly.