I run Firehawk Indy 500's for summer tires and ExtremeContact DWS06 for all seasons. Both have gotten great treadlife, have more than enough grip in the conditions they are rated for and ride quiet right up until 2-3/32 when they should be replaced anyways.
2009 Liquid Red GT
Currently Enjoying : WeatherTech Floor Liners, Tein S. Tech Springs, Monroe PPV Shocks/Struts, SuperPro Polyelast Top Mounts, 19" Sport Wheels & Firehawk Indy 500 Tires, 18" GT Wheels & Continental DWS06 Tires, Subwoofer Wire Mod, Kayhan Audio Headunit, 35% Llumar Ceramic Tint, Morimoto 35W HID Kit
Soon to come: CTS-V 4 Piston Brembos, CTS-V2 Sedan Wheels