I love them all! I tend to go for colour and pattern more than anything, and the crazier the better - marbles, dragons, butterflies, multi, koi! But nothing gets me more than a betta with good form and finnage and it doesn't matter what fins they've got. I will say that I am not a fan of overly large, dragging fins or x-factor genes. I'm not adverse to the imperfect ones though, last night I found an orange VT fella with practically his whole tail gone from biting, and me being a sucker he came home with me and he's getting the love he deserves.