I love all three but I have to say my Favourites are 1 and 3. I am a makeup artist and I find those two are so versatile and amazing got different skin tones and bridal looks. Love!
My favorite for personal use is the 2 (Yes, I'm in the minority). However, I think applying makeup on others always works the best with the original. The warmer tones always seem to attract people the most.
I only have Naked 1, which I love (it's one of the few palettes I've hit pan on at least half the shades). But I really want Naked 3, since I love rosy toned shadows
I absolutely love Naked 2. I am crazy pale and have odd undertones (thanks to crazy genetics!) so the colors for Naked 2 end up complimenting me the best. However, the Naked palette where I have hit the most pans is actually the Naked Basics 1. I get more compliments from strangers wearing that palette than any of the others. I am also a huge sucker for an all matte palette!
I used my naked 2 palette over all my other naked palettes just because the cooler tones suit me but i really do love the shadows in the naked 3 if you like pinky tones.