Donīt have a preferred disc.Each one has its own beauty.
Disc 1-Very funny,comic and with suspense.Almost every mission of the characters ends tragicaly.In the end of the disc they fall into a trap.They were victims of a cabala.
Disc 2-Elloneīs revenge (indirectly).She tries to change the past giving many headaches to the main villain.The characters gain near total freedom in space and time.The villain main plan failed.
Disc 3-Now they freedom on time extends very far to the future.The villain tries an alternate plan using Rinoa to freed Adel.And put the blame on some sorceress from the future.The characters here were on their best.
Disc4-Ultimecia invents a false reason to reach time compression.She pretends to be Rinoa or Quistis.In the end she tries to separate Squal from Rinoa separating the dream about the past from the dream about the future.