Z3TA+ 2 doesn't muck up what made the original a solid choice. Though it's now a little long in the tooth, several point upgrades have kept Z3TA+ a dance-genre favourite, as attested to by all the free patches, banks and skins available for it on the Web. Z3TA+ was reviewed in this magazine in October 2005, and you can find an overview of its features in that review: /sos/oct05/articles/pluginfolder.htm.
It was coded by Rene Ceballos of RCG, but Cakewalk liked it so much that they acquired RGC and brought in Rene to work up their next generation of synths. Z3TA+ was Cakewalk's first commercial soft-synth hit. Published December 2011 Cakewalk Z3TA+ 2.1