I personally would wait until definitive calculations are made, but I think that FS is better. A part from that if you are looking for best Physchic mon, Espeon with C/FS seems the way to go at least at this point.
I am pretty upset about this change on Alakazam attacks, got me 5 tries to get PC/Ps on a 93% one and after all dust and candies expended I feel it is totally worthless now...