Sinclair Spectrum!
Although the amiga was hands down the better machine, there was something quite endearing about that tiny little 3MHz, 8-bit, beeping, rubber-keyed machine with only 48KB RAM, separate tape recorder.... that made you want to SCREAM AND CHUCK THE DAMN THING OUT THE WINDOW!! ... yet I kept going back for more!!
Here's a toughie...
Spectrum or BBC Micro