The biggest issue with these "evolutionary computers with a keyboard attached" is that their market prices peak at the time of their release. When it is new, it is cutting edge, but it becomes obsolete because it is digital technology that gets superseded with faster processors, software, etc. ala a computer. Their prices can only go down, unlike a Telecaster or any wood and string instrument, which changes from year to year.
Given that, I find more sense as others said above, in going back to your old CX3 (priced at its lowest), with sentimental value (maybe your old patches too), and waiting out for a future upgrade to a used SK1 or XK's further down the line.
