I have FFX. Now, the PS2 version is not 4-CD, but just one DVD. Are you sure you are talking about FFX?
Anyway - the game is console RPG. What this means: Very plot heavy. Actual combat is interesting, but not too deep. Combat system is very easy to pick up.
The game world is absolutely enormous: I am about 20 hrs into the game, and still have yet to experience most of the world or find the many secrets. My friend is about 50 hrs in and is right about to finish it.
I have played just about all of the Final Fantasy games, (1,4,5,6,7,8,9,10). Honestly, 10 is one of my favorites, probably right after 4 and 6 which have extreme nostalgia value. The plot (in my mind, at least) is extremely compelling, the game is gorgeous, combat is not too difficult to get into and still fun, and the game has a lot of value (50 hrs ballpark for one run through).
I didn't really like the movie though. Go figure.
Anyways, I highly recommend the game. <A HREF="http://gamespot.com/gamespot/stories/reviews/0,10867,2832771,00.html" target="_new">Gamespot highly recommends the game</A> as well. My advice: Give it a shot.
<b>ßunn¥§troker 0wn§ j00!</b>