Regarding Amiga's I am definitely going to be downsizing them greatly as I only really use an A600 and A1200 regularly, and sometimes a CD32.

For A500's I actually don't have any need for them as I don't use them at all so will definitely be selling them all.. some are even still boxed. Plus loads of extras like external HDDs. I've also got quite a few other thing like external floppy drives.. and now that I've got a Gotek floppy drive emulator in my A600 and can convert all disks quickly into ADFs using my Kryoflux I don't even really need floppy disks! So, yeah probably most of my Amiga collect will finally be going to new homes.

I was thinking more of consoles in my original post though. Definitely keeping anything that still can't be emulated perfectly such as Dreamcast, Xbox, Gamecube but not sure about older consoles with perfect emulation.