I bought a used Amiga 1000 with 4 mghz Sidecar back in 88 when I was 14. The A500 was already out for a while, but for some reason I loved the A1000 set up much better. At the time there were no discernable difference between the A500 although people kept going on about some sort of halfbrite mode thing. Oh and the chip ram was not expandable and stuck at 512k.
I quickly upgraded the RAM to 2 meg which was decent for the time, and shoved a 20 meg partitioned HD in the Sidecar that could be used in the Amiga(After a lengthy floppy boot disk process. sigh). I also had an accellerator card for the PC that brought it up to a whopping 8mghz. Still CGA of course though. At least I was able to program Pascal for school. Then of course I got an external 3.5 floppy and later even a 5 and 1/4 floppy drive. Hmmmm...So many mods abandoned on those. I wonder if the disks are still readable. I had huge speakers surrounding the A1000 too...The system was soooo kick ass at the time and my PC and ST friends were soooo envious.