I think the Pinehurst hierarchy goes something like 2-8-4-5-6-7-1-3, but they are all worth a shot on some level or another. From what I've heard, 6 and 7 are probably interchangable in the above order...I have only played the first three (2/8/4).
For me, the first tier away from the resort are Mid Pines, Pine Needles, Dormie, both courses at Forest Creek, CCNC Dogwood, Southern Pines, and Tobacco Road....probably near to that order within this group too.
Next you would have Little River, National, Mid-South, Talamore, Carolina, Woodlake, Pinewild, and the like...all similar, and all contain a at least a few good holes.
The bottom tier (where absolutely some good golf can be found) is Foxfire, Hyland Hills, Longleaf, etc.