The A500, A600 and A1200 are the typical homeowner machiners (they're the ones that just look like a keyboard). They came out in that order and the most powerful one is the A1200.
The A1000, A2000, A3000 and A4000 are what are usually described as "big box" amigas. They are housed in proper desktop/tower cases. I *think* they were released in that order.
