Which set do you guys recommend?

>This Girl Can Shift Gears
Magearna @ Life Orb
Ability: Soul-Heart
EVs: 252 Spa / 4 SpD /252Spe
Timid Nature
- Shift Gear
- Fleur Cannon
- Flash Cannon
- HP Fire / Aura Sphere

>Quiet Mistress
Magearna @ Life Orb
Ability: Soul-Heart
EVs: 252 HP /252Spa /4 Spd
Quiet Nature 0 Spd IVs
- Fleur Cannon
- Flash Cannon
- Aura Sphere
- Shadow ball /HP Fire

>Choice Specs Lady
Magearna @ Choice Specs
Ability: Soul-Heart
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
- Fleur Cannon
- Aura Sphere
- Shadow Ball / HP Fire
- Flash Cannon