I will not discuss X-2 on the grounds that I still refuse to acknowledge its existence.

Anyway, if you're going to play both anyway, it doesn't matter at all in which order you play them. FFXII is very much a gameplay-oriented game. I too am more of a story kind of person, but even I at least enjoyed playing FFXII because of its engaging gameplay. However, if you don't like that aspect of the game... it's probably not right for you. Some of the characters are interesting (if minimally developed), and the plot is ok, though haphazardly moved only through disconnected cutscenes. So the rest of the game is "ok," but it's the gameplay which makes it worth playing, at least once (I doubt I would want to go through it again). And it is definitely NOT a quick play, so if that's what you desire at the moment, you probably shouldn't play it first.