The LaBella Gold White Nylons in their heaviest guage (.115 E) have the most "tension" out of the Labella tapes. LaBellas will state they are all the same tension, or ftlbs of force, when tuned to pitch. However, the White gold's are pretty floppy, the Black tapes a little less floppy, the heavy Copper whites are about like a normal light set (it's .115 E is comparable to a normal .100 E), the Gold Whites being the stiffest with the .115 E feeling about like a normal .105 E.
I can run about .5-.75mm less string height with the Gold White Nylons than the same guage White or Copper White Nylons.
I will also say that, with my truss rod-less Zon graphite neck, the Gold White have ever so slightly more forward bow than the other offerings. This would tell me, contrary to LaBellas statements, that the Gold Whites are indeed more tension. This is fine with me as I have liked them the best (best balance between mid growl, low end, and just enough top end to sound like a nickel with the tone rolled off).