Well, it compliments Scope quite well, and certainly has another basic sound - very clean, punchy, and somewhat 90ies - similar to Z1, but a bit cleaner.
Effects etc are indeed very good, especially the Dan Phillips stuff which are the best Delays on any DSP platform (better even than the Tape Delay s of Celmo IMO), the whole UI is IMo even better than Scope, though
the small DSP power ( roughly Pulsar 2) makes its 12-Channel-Mixer a bit of a joke...Best you integrate via ADAT in your Scope system, and use a different machine ( i have it running with Pulsar on a G4, but when much Delay and Verbs are used, the PCI bus looses interest in scoping with the data, it works only if you use those sparringly).
Regarding Synthkit, it runs on OS 9 only, and, what i heard, is more a modular environment than a language (i suppose SKD is more of a language). Also, it
is a beta thing, not in the state of a finished app, which seems the reason Korg never made it publicly free (though you can have it free if you ask).
Oasys runs on Win 98, but sometimes it won´t work if you change programm while midi comes in, according to my knowledge - for those interested, i would send a simple Midiinterface (serial, non USB) with it which works just fine.
Despite these shortcomings, it is a bit of a queen of the whole DSP card family - if it was possible to stack the cards, it would be the queen, so
it is more of a single crown juwel

. This is the reason i sell it, it
has just not enough power to use it as multitimbral synth for a whole track (usually it can provide around 4 several sounds), and achieving the same with Scope is costly - thus i go the hardware route, with a K 2000 as main synth, and sell my beloved card

.
But support is still there, there is an Yahoo group and the websites on it are
still amintained, with a big FAQ and many downloads - i guess it was more of an high-tech- prototypical study than a consumer product for the market, which much heart and love going in by its developers.
Kind regards, Richard