Quoted By:
Charizard: With Solar Power the sun is better
Machamp: Since Machamp doesn't have sniper, it's better to increase directly the Attack rather than the Critical Hit
Corviknight: Increasing Speed > Defoging
Coalossal: Sandstorm > the 5 turn damages
Flapple: Grassy terrain > reducing Evasiveness
Kingler: Rain > reducing the Speed