First Atari computer I owned was a 520ST fall 1985, after we sold a Coleco Adam (don't judge me 😁) to use that money for the St.
Prior to the St, I had 2600, 5200 and Colecovision consoles 1980-85.
In hindsight, probably should have got an 800xl late 83 or early 1984, but the Adam specs and...