Concur with everything Matthies says. (what else is new?) Except the snow. . .it seems to be sticking really well lately.
If cost is your #1 concern, go to CU unless DU gives you a full ride + stipend and/or some other great deal. As a student, you are eligible for in state tuition after 1 year at CU.
Everything else is about equal.
Students at both schools seem pretty happy. I worked with 2 CU alums & 1 current student at my summer internship and they had a lot of good things to say about the school. I too see more DU students than CU students at networking events but I think we just outnumber them. A lot of times, I see the same CU people over and over. . .maybe they are the ones that can afford gas?
Anyway, nobody says "oh, I'm better than you or I have better job prospects because I go to CU or DU", etc. There is a mutual respect for the schools and we have a friendly rivary (especially during intra-school mock trial competitions).
I'll throw a negative out there about DU. Wondering if your professor who is visiting at the Univ of N Carolina law forgot about your class. Disclaimer: I'm bitter about not having my grade.