Re: Espeon or Alakazam
While they have similar stats, both do completely different jobs. Alakazam is a sweeper, whereas espeon is a passer. Espeon lacks the offensive movepool that alakazam has access to, but can pass subs and Calm Mind boosts well due to her high SpDef and Spd stats. Espeon's best set is as follows:
Psychic (Learnt at lvl 64/Via TM)
Baton Pass (Learnt as Eevee at lvl 36)
Calm Mind (Learnt via TM)
Substitute (Learnt via TM)
Simple enough. Switch in onto something that cannot handle espeon, and use substitute. If it is a threat but slower, use baton pass and get a counter in safely. If they're gonna try and use a slower special attacker, use Calm Mind and watch as your subs become unbreakable for them. Once you have the desired boosts, pass them off to a dedicated special sweeper.
As said before, espeon lacks the movepool to put across anything close to a threatening sweep. Alakazam is the superior of the two for this role, let me know if you need any sets.