I am going insane

Yes, if you are going with something that’s really hard to drive, as I said not sure tho and I don’t want to talk out of my ass.

You might want to look into GSX 1000 on this forum or look up some comparisons on other forums, I haven’t found any on HiFiGuides. E10K is probably a better dac.
I have the BTR3, haven’t used it with a PC yet, but you can use it as a dac if needed, it’s a neat piece of kit.