The only atty I have built with round wire, 26awg kanthal, is my Snapdragon as that's what suits it best. The Mrs' K5 minis are all built with the same wire, and I only buy my wire from Stealthvape. I've got reels of SS316l, ni80, and Brochrome (which is excellent!) but not currently using any of it - I particularly dislike SS316l to work with!
Everything else has either got Smut or Coilology coils in ni80 - all are fused claptons apart from one pair that are Smut's aliens.
It really depends on how you vape as to what coils you use - embrace the choice!