Bridgestone Deuler HP RFT vs. Continental DWS

[mikes123]

I just purchased a 05 4.8is about a month ago, and the previous owner had just replaced the rear tires with Continental DWS. The fronts are Michelins but are badly worn and need to be replaced asap. I was just going to put new Continental DWS's on, seems to be a popular tire on here, but a friend of mine has a set of Bridgestone Deuler HP RFT's that has over 80% tread life and he would sell them to me for $600. Since my rears are in such good shape I figured I could sell them and come out ahead. But my real question is which tire has better grip/performance? I know the Bridgestone's are a summer tire and the Continental's are all season. I live in Tennessee and we almost never see snow, and I have a company truck as a backup just in case we get bad weather (08 Tundra 4x4). Previously I have had 4 M cars (3 e46 M3's and 1 e39 M5), and I will be getting rid of the M5, so I really want to go with the tire which gives the most performance, but if the RFT's are terrible as some say, I might just stick with the Continentals.