It used to be that the PS# had the best RPG's, but now the best ones don't leave JP. The flagship games for the PS1 and PS2 are no longer exclusives on the PS3. Multiplayer does cost money on the Xbox360.
A big note is that you can run ALL game backups on the Xbox360 with few anti-piracy devs in the way. You also have backwards (For most Xbox1 games) compatibility on all models still. Unfortunately you can't run them from the HD (Without swapping discs).
I'd say wait about four months. If the PS3 CFW doesn't support backup loaders of some kind by then, get an Xbox360. May as well have a library of games and if you buy it, online play rather than one or the other.
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