I used a Sequential Circuits Pro One on a couple tracks. Didn't have polyphony, midi, and a few things. It was interesting. In fact, one of the tracks I used it on, is a track called "Insomnia" on Loki's upcoming album.
got to love them analogs...i been messin with the ms-20 and the mono-poly, i dont like all that patching with the ms-20, but you can get that thing crackin.....my boy got mad anolog synths, but hes into the modern music....like merzbow