Let's say you want to buy a Porsche, not a boxster, not a Cayman, a 911. That's good but which model to go for? With 21 different variants of the modern 7th generation 911 versions the choice is not simple, from the 911 Carrera 911 Turbo S, 911 Targa 4 GTS or perhaps hardcore a 911 GT3 RS? This flow chart will be very useful. So which 911 is for you?