Whew this is going to be a toughie. Lets see..
Amstrad CPC 464
Then started moving on to bigger & better PC's... I don't have any of the atari's left, but the amstrad is in my loft and the amiga 1200 is still on my desk
The 500 is snug in my cupboard. I think part of getting the 1200 was having to sell the 600, I do miss it.