Any car that can be instantly recognised for what it is - not many of those about now - but in this jelly mould age at a guess I would say Audi TT old model / Beetle new model (especially rag tops) / Mini Cooper s and rag tops) / air cooled 911 all iconic all uniquely styled and reasonably decent cars to start with and more importantly to live with . Buy the best model in the range with the most complete dealer history and sit back. Even allowing for the hairdresser factor they will be worth having in 10 years time.