Hi @Randelph
I'd like to use the MZ X to compose original music, I also have a MOX 6 for this purpose. I'm from the old school, I do not use any DAW because I love using the keyboard internal sequencer
So, for me, it's very important to have the needed tools loaded on the keyboard.
Here is my opnion about the topic you have requested:
SOUNDS
Many sounds are ok, many sounds like the synths and the hex layers are excellent (some are breathtakingly beautiful I'd say!), as well as the piano sounds, I've found the piano sounds even more realistic than the MOX 6.
The organs including drawbar organs are very good.
Few MZ X sounds need more love from Casio .
Some PA600 sounds are also great, for example I loved the vintage synths reproduction, they are very good and fun to play.
The MZ X offers the ability to create tones much more easier than the PA so I think that soon we will enjoy new great tones created by the community!
EASE OF USE
The MZ X interface compared to the PA600 is definitely more simple and immediate to operate, you have all at your finger tips and after few hours you have the feeling that the instrument is entirely under your control. I like it very much, especially the registrations: initially I've understimated this feature, but after some times I've realized that a registration is a snapshot of almost all the keyboard's settings and this is awesome!
SPEAKERS
Very good in my opinion, good frequency range and good basses. Compared to the PA the MZ X500 seems louder.
KEYBED
I'm not a pianist (to be honest I've studied piano but ages ago...) and I'm used to synth-action keybeds, so for me it is good... it's quieter than my MOX6, almost the same (speaking of keys noise) to the PA600 one. Very playable in my opinion.
OVERALL SATISFACTION
It was a very good buy for me, I do not regret purchasing it nor I do not regret to have replaced the PA600 with the MZ X.
This keyboard is loaded with amazing features like the various pad modes, the very user friendly edit screens, the wav recorder/player, chord progression (amazing!), mixer, the organs! And the drawbars! The sampler! Tons of stuff to unleash creativity!
The ability to import midi and foreign styles it is also amazing, it's quite easy to import a foreign style and adjust it for the MZ X from the MZ X, without the need of a computer.
WHAT I MISS FROM THE PA600
Right now there is only one thing I miss
- The ability to search tones/rhythms/registrations/etc... by name. When you need something specific it's difficult to remember where it is located, with a search by word function it could help a lot. At least a favorite section could also help.
Well... there are so many things I like, that I'm still excited when I turn on the keyboard
I was forgetting to talk about booting time: well, the MZ X boots in few seconds, the PA600...loading... loading... loading... ... ...
Anyway the most important thing that convinced me to switch to the MZ X is the support: the Casio staff is always present to answer questions, suggest tips and fix bugs.... it's really nice to have a post-sales support like this.