I would pick a blood lyn, because I love the plunge and you get to wear the badass outfit and fight all the time. Who cares if you're sold to someone if you get to be nonstop badass? Besides, rebel blood lyns are hunted fo-eva, so going rebel would interfere with my sleep schedule, and thats a serious no-no.
Oh and my second choice was Paradan, because watching them trying to boycot that plunge tounament was just hilarious. They're like comic relief for the entire way.