having beaten all final fantasy games (except V and XI)(since XI is not beatable, and my computer crashed back in the day when i was fighting the end boss of V), I can say that I enjoyed very much all of the Game boy final fantasy games, as well as mystic quest. mystic quest is a completely different style of game, much like lufia and lufia 2. I think all in all the worst final fantasy game i ever played was final fantasy 2 (JAP not US).

Oh, and there was also a very good (though not made by or endorsed by) final fantasy game that someone cloned onto the US TI-80 series calculators, it was basically a clone of legends 1, but with a few differences.