I picked up both recently and I'm liking the DX100 more. While I've been finding it easier to program sounds from scratch on the CZ-101, the CZ just always ends up sounding too "analog" to me. I know it sounds a bit crazy saying that, but I got both of these solely to create sounds which are the polar opposite of analog and the DX100 excels more at this.
On the DX100, you can take any preset, change the algorithm and freq ratios at random and it can become something entirely different very quick and easily. A saxophone can suddenly become some abrasive FM chainsaw lead in a manner of seconds. Maybe in time I'll be able to mangle some more chaotic digital sounds out of the CZ-101, but I've been all over the DX100 like a rainstorm on a motorcycle helmet right now