Elrod sig2 or sig3 for da converter

Which is better for da converter, Elrod sig2 or Elrod sig3?
sig2 is designed for sources and other low draw components, however some people prefer the sig3 on the same kind of components. Its really a hard choice, but the sig. 2 is what your "suppose" to use- YMMV.
Preferred the Sig 3 and sold the Sig 2 did not get that cord at all.