The first computer I remember owning was a Commodore 128 and I don't remember it all that well, I was too young at the time.
The one I remember the most from back then was the one after the Commodore which was a Compaq Deskpro 386 w/ a 16mhz 80386 Intel proc
And then we upgraded again a year after that to an IBM PS/2 Model 80 (20 whoppin' Mhz) with OS/2 on it, that was a kick ass system
I remember we had that comp for quite some time and was the last one we owned before Intel released the 486 and that was a homebrew comp running DOS, can't remember who the maker was.
And of course last but not least of my old skewl computer ventures was my very first that I bought on my own. It was a Quantex w/ a 66mhz Pentium and a 2x CD-Rom drive loaded with Win 3.11. It only got better after that comp, I upgraded the hell out of it everytime something new became available for it. Anyone remember the Intel Overdrive procs? I bought a 133mhz Overdrive for that Quantex and it was like a whole new machine doubling the speed! hehe.