Just wondering, what do you notice with your $650 motherboard that you wouldn't get from a say.. $450 motherboard. I mean, your money, no worries there, but in terms of value proposition, it's easy to get wiped out spending $$$$ on hype.
I mean if we talk HDD's there is an appreciable difference between say a 5400/7200 rpm drive, or Spinning vs SSD etc.. Even to some degree, bigger processor...
Understand where you are coming from, for me it was the extra feature sets, another nvme slot, the extra phases for the vrm and a lot of other small things, I bought mine to use as my unraid server so the extra cost was well worth it for me.