So there is currently a flash sale on psn and ToX and ToGf are like super cheap.

Both my gf and I used to love ToS and I've been searching a while to find a new game we can play on the same screen.

So the multiplayer is the most important point for me, with story and character design second.

Should I buy Graces f or Xillia  ?

I have never actually tried the multiplayer in any of those two games but I assume it is very similar to all the others.

In saying that I found the combat system to be better in Graces because it was more single character combo heavy BUT I dont think it would work as well if another player was present. So I would say Xillia might be better for multiplayer.

I would suggest looking at the co-optimus website for a review of the multiplayer, but they have given both the same score.

i haven't finished Xillia yet but i loved Graces F so i would say they are both worth it but i haven't really tried the co op in either of them