I tried Abyss for 6 hours and just couldn't get into it. None of the characters appeal to me (except Jade) and the world felt really uninteresting. Because the main character knows nothing about the world (like Tidus in FFX) the other characters were constantly dropping info-dumps instead of introducing information gradually, and I felt the pacing suffered because of it.
However... I do agree with this:
I say no, but I'm also one of the few who doesn't like the game. So logically speaking, you probably should try it, chances are you'll be one of the 99.99% that likes it.
The game is definitely worth trying if you're a JRPG fan. It just didn't appeal to me personally, I guess.