I did look into what Mr. Hands mentioned, and it seems that 15 Def IVs is a little more optimized than 14.
"In the case of a tie between multiple stats, it increases one stat, prioritized in this order: Attack, Defense, Special Attack, Special Defense, and Speed." According to Bulbapedia. Although, I don't know if that priority was changed this gen. I doubt it makes a huge difference, but having that extra nudge can be unexpectedly helpful and it's a cool tidbit because most people (including myself up until now) don't know about stat boosting priority.
"In the case of a tie between multiple stats, it increases one stat, prioritized in this order: Attack, Defense, Special Attack, Special Defense, and Speed." According to Bulbapedia. Although, I don't know if that priority was changed this gen. I doubt it makes a huge difference, but having that extra nudge can be unexpectedly helpful and it's a cool tidbit because most people (including myself up until now) don't know about stat boosting priority.