I personally prefer it to 4 because of its themes and characters (though I am in the minority, since people usually prefer the more heavily anime-inspired and immediately likeable cast of 4), but it might be a bit harder to get into after 4 since 4 really makes many aspects of gameplay smoother. Your best bet would be to get the portable version if you have a PSP or Vita - what that version sacrifices in anime cut-scenes it really makes up for with huge gameplay improvements, like a smoother equipment interface and controllable party members (not to mention there's a female path which is awesome). If you can't get that, get FES. There is literally no reason to play the basic version of the game at this point.