I’ve already said I think it’s weird to have devoted any energy on replacement models already just to make them bigger, have less lights, soft buttons, and a slightly smoother jog on the non-M. I assume the software is not any different on them so the quantization of effects being independent of when you start triggering said effect I assume will work just as fine with the 5000s and the 1850. I just trigger the effects whenever I want… in phase with the beat, out of phase, whatever floats my boat. Regardless of what I think, the new players are coming out. So if you like squishy buttons, less lights, bigger everything, and/or a smoother feeling jog, then people might was well get the 6000s instead.
Now, the most obvious reason for the 1850 wasn’t the cosmetic stuff or the barely useful quantization but to redesign the bottom board ground so fewer people get issues with hums & noise with the unlinked grounding posts not touching the bottom of the case inside. While they were at it, they tweaked the cosmetics, added the optional quantize thing so the effects section talks to the Ethernet more, changed the headphone amplifier to a different design, and bumped the AKM multichannel DAC up a model number or something. Probably the thing I’d most be interested in is the 1850’s different headphone amp since sometimes I think the X1800’s general warmth combined with its warm headphone amp is too much of a good thing. Then again, neither of my 1800s have problems, and if either developed hum I believe I know how to fix it easily.