This is a very difficult choice for me, but I'll say Fluttershy and Rarity. Fluttershy because, despite her namesake, being a bit on the shy side, she has her moments of letting her mind speak out (Her critique in Suited for Success, the cheer in Sonic Rainboom, etc), but even when her shyness is played for laughs, you can't help but want to squeeze the ever loving cuteness out of her. Rarity because when I first saw her, I thought she'd be the stereotypical fashion obsessed freak that plagues most shows aimed at girls (I'm looking at you, Bratz), but inside that fashionista facade lies the heart of a generous unicorn who, despite some moments of selfishness, thinks of others before herself. That and some scenes she did made me have to wipe Pepsi off my keyboard (The whining in Dog and Pony Show was the main culprit here) As for the rest, Pinkie is a very close 3rd. What can I say, I'm a male version of her! Nuff said!