Porsche 997 Carrera S & Porsche 987 Cayman S vs KTM X-bow, Ariel Atom, Audi R8 and S4 and TTS, Mini JCW, Camaro and Corvette, Ford Mustang, VW GTI, Nissan 370Z, Lambo Murcielago, BMW M3, Lotus Exige, Subaru Impresa, Jaguar XKR, Mazda 3 (Car & Driver mag., 02/2010) Gemballa 997 Avalanche & TechArt 997 GTstreet (Evo mag., 05/2008)