here you go, i had one on loan, for three months:
in short: unique character, not like earlier CS50/60/80. very flexible filter, aftertouch, ring modulator. great, "gloomy" ensemble - sometimes it sounds almost like a huge organ/string machine with it engaged. to me it was great for reto soundscapes, almost coming form early electornic krautrock albums, or from TD's Rubycon..
if its worth it depends first n formeost on condition and price. fixing it may be a gamble, so if its in good shape it may be worth it. altough i liked it very much, weighing against its enormous size and weight, and how much would i actually be using it in my music.. i decided not to keep it. ymmv.