Amiga 500 in 1988. I was 22.
It was the 'Flight of Fantasy' pack that came with 'F29 Retaliator', 'Escape from the Planet of the Robot Monsters' and something else I can't recall. They were in my Mothers shopping catalogue and it was a 'pay over 38 weeks' deal.
I can remember being so excited when the catalogue truck arrived and dropped it off. The following weekend, I bought 512k expansion pack and a copy of Dungeon Master. The weekend after that, an external floppy.
Nothing short of an amazing machine and it was goodbye to the C64 at that point.
