Also, regarding "naturalness without losing detail and space", that’s precisely the words I would use to describe what happened to my system when I added Nordost Valhalla 2 speaker wire to my system. Holy crap that was nothing short of stunning how effortless and natural my system became - way bigger impact than the power cords which also make an obvious improvement but not to the transcendent level that the Valhalla 2 speaker wires transformed things. But I wouldn’t be getting all of that effortless, unconstrained detail without the high end power cords. Also of note, the Valhalla 2 power cord was lacking in bass in my system, or I would have gone with that as well.
One thing however, is that since the ultra-revealing Valhalla 2’s were added to my system, I’ve now become sensitive to differences in sound depending on the time of day. I either need to consider adding a conditioner (I run my Diablo 300 power cord to the wall), and it’s only after about midnight that things sound great. Things can sound absolutely awful during the day - muddy and constrained. Also possible that it’s noise on my ethernet switch that quiets down late at night. The difference is quite literally night and day. Heh....