Well, I went to Roland's site, listened to all the demos and watched the video... (and listened to Nielshs's demo)
I'm sorry, but I can't get worked up about this one at all. First of all, you know the thing they are touting the most? Glitchless patch changes... We've had that on Roland arrangers for years, including the G70. You occasionally get a glitch when an effect is changed (their main point, I guess) but with planning (what you have to do to get it on the FantomG as well, anyway!) you can avoid it, too. But basic tone change without the cutting off of the previous sound has LONG been the strong point of Roland arrangers...
Strike one...
Next... a 128 track internal DAW, with a mouse for control. Jeez, guys. C'mon! Anyone who needs a 128 track sequencer for audio/MIDI has already GOT one, with a great big honking monitor (not some little TFT 10" non-touch screen) and more plug-ins than you can shake a stick at...
Strike two!
And only TWO ARX slots (compared to SIX SRX slots on the FantomX) with only two boards available, both of which are dedicated to ONE SOUND EACH... So there goes your expandability....
Strike three... You're outta here!
Strangely, the audio examples of the main grand piano sounded very phase-y, kind of weird, but the video of it was VERY nice, but not THAT much better than the FantomX's main piano (in the G70, too). The new 88 action looks nice, but not to lug around!
And Nielshs's demo... sorry, but even with the 3-band compressor squeezing the E80 version a bit hard, it sounded better OOTB than the FantomG, IMO... I am sure with tweaking, and maybe the ARX drum board, it could be made to be better than the E80, but OOTB, sorry. Not very impressive.
If someone wanted to give me one of these, or a MotifXS, I'd probably pick the XS...
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An arranger is just a tool. What matters is what you build with it..!