I think Casio at some point should rally to produce an instrument that falls somewhere between the WK's and the lone MZ,in terms of the feature set.I guess I'm just imagining the ultimate rompler,with a proper sequencer and the ability to load 3rd party sounds,and not just from the Casio Music Website.96 poly(a good compromise between 64 and 128) and a pair of stereo auxilary outs.