Ron writes from Seattle with news of yet another EMS Synthi emulator. This one is Mac only, so I can't tell you if it's any good, and Ron hasn't had time to play with it properly yet. It looks great (with a built-in oscilloscope, no less), and is up to version 3.2, which sometimes bodes well. I suspect one of the big companies, most likely Arturia, must be working on a mass-market Synthi. More on Virtual Synthis here and here.