The first Sony PlayStation was for me an iconic console. It was the first console since years I had to have because it could do games which weren’t available on PC on that time for that price. I had the SCPH-1002.
The game changer was ofcourse Gran Turismo. I was in love with the PlayStation when I saw the replay function. The 3D graphics were very impressive for that time. The massive car list was massive.
A technical improvement for me personally was connecting the PS1 with a component cable giving better picture quality to my beamer back then.
Currently I have a SCPH-7502 and SCPH-9002 (reserve) in my collection. The SCPH-7502 still has the parallel connection.
Also check out my PlayStation Classic, PlayStation 2 and PlayStation 3.
Information:
https://en.wikipedia.org/wiki/PlayStation_models