It's Porsche marketing I have beef with.
You only have to look at the 911 range to see how thinly they're spreading things. Line-up is currently: Carrera, Carrera S, Carrera Cabriolet, Carrera S Cabriolet, Carrera 4, Carrera 4S, Carrera 4 Cabriolet, Carrera 4S Cabriolet, Carrera GTS, Carrera GTS Cabriolet, Targa 4, Targa 4S, Turbo, Turbo S, Turbo Cabriolet, Turbo S Cabriolet, GT3, GT3 RS, GT2 RS and the Speedster!