Glad he isn't into yoyo-ing up and down with weight. I think that is hard on your body and permanently moving up is the way to go.
However him saying "I have lots of challenges at 170, it is a deep division." is a little dissappointing. Yeah it is a pretty deep division but you beat all the top ranked guys already. I don't think there really are that many challenges left. You already beat the #2-#6 guys and beat them easily.
"I'll never fight a friend or training partner". Ughhghghghg. I don't want to re open that thread yet again and I'm a huge GSP fan but I think he is severely lacking in perspective when he says this.