Okay, let me hit you with the offbeat Tascam 564 Minidisc Portastudio, 4-tracker!
Not mentioned previously, because it's -digital-, ATRAC encoded Minidisc data recorder, plus awesome 12x2 mixer, record direct-4-simul, or 2-simul in buss mode.
Much like the 424mkII, only better. Looks similar, but way, way advanced compared to the 424mkII.
Ok, I cannot compete with Dave's collection of picts but I thought I'd post a few picts of my pride and joy - Tascam 244. Dave, commented earier about how I received a mint 244 and that's very true. When I received it, I took the bottom part off to expose the guts of this machine. Take a look. Now, have you ever seen a more mint "insides" of a vintage unit ?