Nordost.
I’ve been in the hobby since about 1985 and was in retail for 12 years. I’ve personally owned many of the usual suspects, and when in retail many companies would send us cables, hoping we would promote them. Also, trade-ins.
Nordost, to my ears, in a wide variety of systems, simply passed more information and editorialized the least.
Of course, I have not heard everything and I don’t dismiss anyone else’s different preference. But Nordost has proven itself to me and I subscribe to the "complete loom" approach; I have a smattering of Heimdall2, Frey2, Tyr2, and Valhalla2.