The PSX era was really solid, the NES era was great for its time, and while the PS2 era had one of my favorite FFs of all time (XII), it also had my least favorite (X). XIII's a mess which is too bad. All that said, I consider the SNES era to be the most solid, with three games which were all original, enjoyable in their own distinct ways, and incredibly important in shaping up the definition of FF.