Outside of things like HD video, for the common man, a low end SAM system is more than enough.
You find me someone rendering production grade stock on an OS4 machine and I'll eat my hat. You find me someone doing post production on any NG Amiga system, I'll mail you $100.
You won't. The problem with them all is the software is not there, and that doesn't matter a lick if you're using a SAM or the X1000. Sorry, AmigaKit - it's a great machine, but it still suffers the root problems of the OS and the apps available. Install 3 V12's in a FIAT, it's still a FIAT. Know what you're in for before you buy. Me, I've tried using my OS4 (and MOS) machines for sole daily usage. I end up using my tablet more. Your usage case may vary.
You buy an X1000 and you'll have your web browsing experience come to a crashing end every time you submit changes in a GDoc, just like it does on my SAM. Consider it a built in feature of the leading browser.
I love my SAM, but let's not delude ourselves that additional horsepower and a $3000 pricetag for a motherboard or machine like the X1000, that it runs a whole new class of software. It doesn't. Sorry.