What does HP Electric mean?
Milotic, hands down. Because he's so hard to find as a Feebas, it makes raising and training one feel far more fulfilling than just "get to level 20 nao plzkthnx". I actually LOVE making PokeBlocks and Poffins! I feel like a trainer actually would, making treats and such for my Pokemon to eat! There was a time I could make even a wrong-matured Feebas become a Milotic!
So for me, definitely Milotic. And for fucks sake, stop calling Milotic a "female" counterpart for Gyarados just because of beauty. That gets me so eurgh. ._.