This vst is supposed to emulate the classic Oberheim OB-X, but actually does much more.
I think that's the only VST I ever tried (and I tried quite a few) which sounds "analog". It's explained on their website how they achieved it, and the results are pretty convincing to the ear. Also I find the presets to be very good (plus : just for fun, you have a whole bank of presets with famous songs synth presets
).On the downside, there's no mac version (though apparently you can also use it as a NI reaktor patch), the interface feels cluttered, and there's no way you can program it without reading the manual...
Well, it's probably one of the most underrated synths out there, so go and try it ! You'll be amazed (there's a demo version on their site and plenty of media)
