which 911 models have collector quality

I haven’t followed Porsche for 30 years, I had Targa and then the first SC convertible new, I turned off Porsche in 1983 after in the PZ Wien Liesing the Porsche employees were only envious, mistrustful and after the young Postrche drivers against arrogant, aud today I know they have not even earned pocket money against our income in the 70 and 80s. After several Ferraris,600 S, and SL today I have to put my hat in front of Postrche like the second For me an incentive to acquire some F and G models, already to make my numerous jacks colder. May I ask myself to teach which G and F models I should start collecting, I tend to Targa. With best thanks and a beautiful Easter Monday Mick