I'm really not sure what I prefered, they're both great, I prefer ToP because it's longer, more character development, & better story (IMO) but FFIV has a better battle system that I get less tired of, it's simple & easy to use again, but in ToP, it can be really hard sometimes, I still love them both.
I might prefer FFIV more because I havn't finsihed it yet, a lot shorter but a lot harder, the last dungeons on the moon are really hard.
I honestly think that FFIV is a lot harder than ToP
I'm glad they touched up FFIV a little, I mean, it would take them an Age, they ARE remaking all the FFs I-VI (III on DS) so it would take them AGES to completely remake all of them with Golden Sun quality, besides, the game was designed with the Zig Zag, the maps may have to be changed a lot if they added Diagonal, I think it's fine, the remade music is also great, & we get a new dungeon, infact, it's perfectly fine considering I never played the original on SNES or PSOne, so it's great for FF n00bs. 