My father's father had a string of new Pontiacs from their peak years: '55, '57, '63, '66, '69, '72, '75 [then Olds; '82, '89 and Cadillac; '78, '97, '03]. Always new. He passed away in '16.
My father got the '63 because he hated his '62 Biscayne, so his father traded it on the '66 instead of the '63. Then dad got a '70 and a '77 [then moved to Buicks; '89, '98, '06]. He & mom have a '12 Cruze now (sold the '06 last year), looking to replace it in the spring. Considering a small CUV. I should see if he likes the Tour-X.
The ones from above that I personally knew were the '70 & '77, because dad always ran his cars a long time [the '70 until '80, the '77 until '95]. I can dimly remember grandpa's '72 & '75 [the '75 got totaled in '78], but it's the ones after that I knew well from his cars.
The Pontiacs I've had were '64, '64, '65, '64, '65, '66, '65, '60. The first '64 is the only one I still own. But despite the above lists, I gravitated to Pontiacs on my own; my father has never been a 'car guy' and his 2 Pontiacs weren't particularly aspirational ('70 Catalina 4-dr sedan, '77 Catalina Safari wagon).