Cotes de Castillon is on the Eastern edge of Bordeaux, not that well known and of a slightly lower quality than the big appellations.  Hence the reasonable price to go with this little darling.  We drank it after the Trivento Syrah, and the overwhelming impression was typicity. We all gathered this as a French wine, no mistake.  With 5 years of age, it has taken on some secondary flavors, the tannins have smoothed and are decent.  There was a slight imbalance, not sure what the deal was, but nothing too obvious.  It was enjoyed by all and will certainly be on our list again.  The big boys gave it 88 points, no disagreeing there, and worthy of 4 stars due to its high QPR (Quality Price Ratio).  I highly recommend this wine for casual drinking and perhaps a lighter meat dish.  Well done, finally a decent, affordable Bordeaux!