From this list, I recommend Rockwood and Watts/Hillandale for their popularity with Duke affiliated buyers. I listed a Duke law grads home last spring in Rockwood and we had lots of activity and the seller was pleased with the selling price. I also would consider Duke Forest for exceptional resale. I recently pulled some listings for a buyer and there were a couple nice homes priced in the 200s.
Either way, when you find the home that is right for you, make sure your buyer's agent shows you the comparables for that neigborhood before you make an offer. Good luck!
I would recommend Duke Park, Northgate Park, Old North Durham, Trinity Heights, Trinity Park, Watts Hillandale and Wall Town. Obviously these neighborhoods are probably going to be costlier than the others. If you would like me to send you some available properties, please contact me.