Besides the Porsche 918 Spyder, the Cayman GT4 and 911 GT3 RS are some of the most track-oriented, craziest and most enjoyable vehicles to drive from the German automaker. The GT3 RS is more powerful and expensive than the Cayman GT4, but the smaller and less expensive Cayman weighs less. One is a pure sports car, while the other is a beastly supercar. So which one of these track-focused vehicles will post the quicker time? The obvious answer to that is the GT3 RS, but is the Cayman GT4 more memorable?

Auto Express brings both Porsches to Silverstone to attempt to answer the question of whether the GT3 RS is worth twice as much as the Cayman GT4.