Don't sleep on Craiglist y'all.
The my semester before my last one I found a roommate that was a grad student that owned a really nice house. I had huge room that was big enough to have 2 King sized beds and still have room, a nice walk-in closet AND a utility closet. The sun room had a Bowflex workout center, down stairs had a full sized pool table and in the living room a 60 inch HDTV ( a DLP rear projection..not a plasma/lcd). Get this including utilities all I paid was $450 TOTAL and I didn't even have to do first month last month.
The good thing about the Raleigh Durham area is that there are tons of Grad students between UNC, NC State, Duke, and NCCU. For the most part they are pretty focused and easy to get along with ,basically just like you, trying to advance in life. The grad student roommate deal is big out here. Not a lot of riff-raff.
I'm not saying it's something that you would do, just putting out there another option for housing in the Raleigh-Durham area. HTH.