I wanted to wait on that Japanese-hack (T-Edition I think it is called?) to be in english, but alas I don't think that will ever happen. I recommend the GBA version due to the extra lengths people went to make it better now, but the trade-off is no FMVs, but that can be remedied from youtube before you play it, and after you play it. Actually I'm starting to like the ios edition somewhat now, but until the day someone replaces the battle menu back to classic mode. I can deal with the sprites, but hopefully somebody will get rid of those one day.
Honestly, this whole thing can be remedied if someone did a SNES or PSX edition with the new content (if it has enough room to do so), but at the same time that could have been done already, and I'm assuming there is a reason for it unfortunately.