i dunno specifically with elektrons, but with some stuff i definitely get interference if i use unbalanced. (usually stuff with internal power, now that i think about it) mostly i’ll hear crappy radio, sometimes cell phone pulses. cables aren’t what i’d call super long. mostly between 6-10 ft.

i don’t think it’s snake oil, but if you don’t hear a problem i don’t think it’ll make a difference.

i mostly use TRS cables for everything because they aren’t really anymore expensive, (especially if you make your own) but there’s the odd bit of gear that doesn’t like TRS too, mostly guitar-centric stuff, it seems.