Back in the days when I used to own the old systems like the NES, SNES and Genesis I used to have to sell my current system to get the next one.
For that reason I dont have any old systems but I'd like to get them again just for the sake of collecting them.
I currently have:
GBA
N64
Dreamcast
PS2
Xbox
PC
I used to slag the Xbox off all the time as many people do until you actually play on one and see how its superior to the excellent PS2. I havent given up on the PS2 though. Still gotta love it. I'd love them all even more if I could get them reliably chipped though