For starters, I would agree on SynthMaster with the Nori Ubukata '
Historical Synth Giants' sound sets. Lots of sounds from Floyd, Genesis, Emerson, Jarre, etc. For the money, you cannot beat that. $99 for the synth and the expansions are $8 each right now.
http://www.synthmaster.com/synthmaster.aspx Nori knows a little bit about sound design.
A little bit of Nori's bio:
Nori was one of the first official sound designers for Yamaha DX series. Later on, he worked for Yamaha and Korg as sound designer and also as developing adviser. He was involved in almost all of DX,SY and TG series, VL-1 and VP1 of Yamaha , Korg's T-series, O1/W, Wavestation and Prophecy. He published several optional voice programs for DX and SY series, Korg M1 and Ensoniq VFX/SD. In 2005, he started designing presets for Arturia products, being an official in-house sound designer and demo music composer. At the beginning of 2012, he became a freelance sound designer and musician. He mainly plays theremin with CV driven analog synthesizers and has released 3 albums so far in Japan.
And then I would recommend IK Syntronik.
http://www.ikmultimedia.com/products/syntronik/ They even have a free version with no limits, that comes with a small set of presets from each of the 17 instruments. You can buy individual full instruments for $49 each, or get the whole bundle. They sampled 38 vintage synths to come up with these sounds, and added their own filter models for an authentic vintage analog sound. Sounds very good!