i have far too many beige whales. in general stuff with: nice tactile media (cartridges or floppies), ease of getting software for (legally or otherwise), interesting things to do with (does it have cool games, can i use the software without it being frustrating), relatively easy to make new software for. the Amiga 600 for me fails a bit in the ease of use but it's the closest to a system like that that i currently own. right now i'm hankering for a Mac OS 9 native device but desktops are too much of a hassle anymore.