RE: Shiny Pokémon in X / Y: Less Rare & More Special
Well I decided to take a break from my Hawlucha MM, and I went into the friend safari, mainly the first time as a joke.
First few encounters had a Shiny electabuzz, which I thought my beloved delphox wouldn't kill with psyshock... I was wrong <:'(
On a better note, I took it upon myself to hunt, and the next morning after a few encounters in a different friends safari, boom, a shiny tyrogue which I actually managed to catch! This guy took I'd say about 7 hours to find, but I'm happy because he was a lonely nature with decent but not great IV's.
Not one to be satisfied with one shiny, I went looking for a ghost safari then went hunting. Just as I was about to stop for the night (same day as tyrouge btw) I found a freakin' shiny Pumpkaboo. Words could not have expressed my joy when I caught this since shiny Gourgeist is a brilliant shiny. Pumpkaboo took about 3-4 hours to find, this was kinda on and off though. I only went full huntmode after I laid down for the night.
So yeah, I'd say that the friend safari is your safest and easiest bet of getting shinies unless you're like me and you use an EV trained pokemon to try to weaken a shiny.