As much as I used to lust after a Four Voice (and I was very close to getting one several times), I think I´d rather go for two of the modular patch-panel versions of the new SEM these days. An original Four Voice would be terribly hard to modify -- I would love to have it modified the way Michael Hoenig had his FVS modded by Jim Cooper with multiple CV/Gate ins and outs --, and it would be a shame to ruin a classic artefact by modding it.
Tom Oberheim himself got the re-issue ball rolling. I played one of those new SEMs (and compared it side-by-side with an original one), and I would have a hard time telling them apart in a blindfolded test.
Even though the Two Voice is essentially the same thing technically, I think the Four Voice is a much better buy. The TVS has a built-in sequencer which is quite nice because the entire unit feels quite self-contained, but it doesn´t justify the extra money. If money was of no issue, I´d replace the programmer section of the Four Voice with a Niessen SAM-16 sequencer in a Dr. Walker / Air Liquide fashion.
Great-sounding synthesiser, though (think of "As falls Wichita, so falls Wichita Falls" by Metheny/Mays).
