I have played both of them quite a few times. The greens at Raleigh are very difficult. The greens hold relatively well so full shots aren't overly difficult. Chipping, pitching, and putting, are a different story unless you know where not to be. The first time I played the course I missed the third green on the left, which I thought was the safe side because the right falls off into a bunker and woods. The recovery shot, however, was treacherous. I was glad to make four.
I played Sedgfield before and after the greens regrassing. Before the greens were receptive, quick, and very gettable. Afterwards they got very firm and very fast. I do not score nearly as well as I did previously. They are not unfair but you need to be on your toes. They might be some of the best surfaces I have ever played.