If I'm honest I have owned other systems, but they were like flash in the pan stuff.. I never really got "into" them like those mentioned!!
My current retro collection isn't too bad and I'm hopefully gonna help it grow
I have a few Amigas (500's and a 1200T),. a couple electrons, a 48k speccy amd a 128k+2 speccy, plus other bits n bobs (4 playstations, 1 GBA, 2GBA SP, 2 Xbox, PC and more!!)
It has become a hobby of mine now, but my heart will always be with the Amiga