This soft-synth is truly amazing. You need only to watch any of the numerous videos on You Tube, to get a feel for it's unquantifiable potential.
Provided at a fraction of the cost of any conventional hardware synthesizer and several times more user friendly and capable, it is very hard to get your mind around the fact that something so expansive & wonderful, fits right in your mailbox!
Of equal importance to the 'front-end' capabilities, you can rest assured that Spectrasonics (the design team) are very good on product support; you really can buy with the confidence that they care, and do not hide behind a barrage of confusing links on an over-populated web site.
Finally, I know, through my experience with Stylus RMX, an older and more established product of theirs, that this is not only a state of the art product today; it will continue to be improved, and will NOT therefore be overtaken in today's technological tidal wave and will never be 'laid to rest' by the design team. If you opt for it, you are not only buying hours of pleasure and inspiration now, you are investing in a product that will blossom like a well cared for garden.
Finally, do check your system's capabilities with those of the software carefully, before buying in. It is designed to be processor-efficient, but the capabilities of this vast synth engine, do need a processor that packs a punch, and the RAM to deliver it.
ENJOY (and then savour every update as if you were starting over)!