Commodore Amiga 500
Our third computer was a Commodore Amiga 500. It was the low-end successor to the Amiga 1000 and a competitor to the Atari ST computers based around the same processor. It had 512 kilobytes of RAM, a built in 880kb floppy disk drive but no hard drive. This computer was without a doubt more advanced than its competitors that used the same processor (the Atari ST and the Apple Macintosh). It never gained any real acceptance as a business machine but it was the best games/graphics machine on the market because of its superior hardware design (IMHO). It had separate chips for sound and graphics which relieved the main processor of otherwise CPU intensive tasks.
This machine delivered 4 channel, 8 bit stereo sound and excellent Blitter graphics that made the competitors look pale in comparison. The Mac at this time had a built in small black & white screen and average sound capabilities and the Atari ST could never compare with the fast Blitter technology incorporated in the Amiga. The Amiga also had preemtive multitasking capabilities already around 1986, something that is only becoming a reality for Mac owners today. Needless to say, battles were waged between the owner groups of the three different platforms but I still firmly believe that the Amiga was the superior platform of that day and age.
During my ownership of this machine I bought myself a color monitor, an extra external disk drive and an Epson 9 pin dot matrix printer to enhance my computing experience :-) Of the three different platforms based on the MC 68000 processor, only the Mac lives on. Some would make a case for the Amiga as well, and although the name and a business tied to it is still floating around, there hasn't been any real business breakthrough to speak of for quite some time. It is however interesting to note that there still exists a very dedicated Amiga user group of significant size which is more than can be said for the Atari ST.