I did it in an unsatisfying fashion for the sake of getting 100% ASAP so I could then go back and really enjoy it, but I haven't done that so far. Got sidetracked with all sorts of things. Generally I really like the Via Infinito since it's one of the few optional dungeons in Final Fantasy that is pretty much never easy, although the most interesting part of the dungeon is definitely Level 80+ and it always takes a while to get there.

It's just a shame that you can circumvent the challenge it presents so easily.