The first home computer with 64k memory to break the $1,000.00 price barrier.
The Atari 800 was only 48k and started at $999.00 but dropped to $899.00 even as the Atari 400 stayed at $399.00.
But the Commodore 64 was the king. Until the Atari 800 xl came out. But that is another page.
I can only write about the Commodore from what I remember from the 80's or what I was able to collect retro starting mid 90's
Commie people still have their 64 in a closet.