The Scorpion, unlike most other virtual analog synthesizers, does not attempt to recreate any particular real-world analog synthesizer, but contains original circuitry, and is capable of a wide variety of useful and original sounds.
The Plucked String is a physical modelling string instrument, with a warm and pleasant sound - from fuzzy, metallic guitar strings, over smooth nylon strings, to big and fat floorbass, as well as more imaginative sounds with less resemblance to any real-world instruments.
Demo versions are available for download now - the Scorpion costs US$49, and the Plucked String is US$29, the Synth Pack includes Junglist (Usually US$69), Scorpion and Plucked String, all for just US$99. That's more than 30% off the regular total price.