Decisions, decisions, decisions.... (for the guys)?

I go to UT where the girls look incredible. In two of my cles there are two girls who are clearly into me (I'm not deluded, I'm just aware). There's this hot redhead who seems to start shuffling around when she sees me and gets red in the face. This is surprising because hotties are usually hard to read. In another cl there's this brunette who is okay looking, but really smart. I like smart girls. She seems to be interested in me too, she always looks back in my direction and after being in that cl for 4 weeks, you would know there's no clock back there. Crazy thing is there is another cl I have both of them in so I can't go for both. Come on guys what would you go for?