I've gathered quite a collection since returned to the Amiga 2 years ago, but since I'm more an Amiga user than a collector I have decided to keep only this:
* Amiga 4000T and Amiga 2500 - both fully loaded with gfx cards, accelerators etc.
* C64 breadbin and C64 wedge model - both for making music, with Prophet64 and the hopefully-soon-to-be-released MSSIAH cartridge
* C64-DTV
The rest of my collection is being sold right now.
All other computer stuff I have isn't retro (Wii, laptop and desktop pc)