I saw a video a little while ago that was demonstrating the Korg MS-20 and briefly he showed the MS-10 filter. It sounded much more beefy than the MS-20! So, of course, I had to get one!
For some reason, this eBay seller decided to not ship for almost 3 weeks but he was nice enough to convert it from 100 to 120 volts. It sounds fantastic! Considering it only has one oscillator and filter it has an amazingly rich and warm sound that puts it a notch above the Roland SH-1000. And it only takes one short patch cable to add Pulse Width Modulation to make the sound even thicker. I definitely love this little synth.