I'm just curious, I give any new string idea a try, hex or round wire, coated, colored, neon, cobalt, if they had ones sanctified by the Vatican (for the saintly bassist like me), I'd buy those too - variety is the spice of life! D'Addarios are cheap and ubiquitous in Germany too. The most prevalent string brand even ahead of Rotos, GHS or Warwick.
Why has no one yet come up with strings made from salvaged parts of the Titanic, Hood or Bismarck? For those really deep sounds.