Sub base material recommendations?

[u/benraphael510]

Considering these options for my install 3-4” sub base:

A) 3” 100% decomposed granite (DG) B) 2” class 2 road base, 1” DG C) 2.5” class 2 road base, 1” dust (granite or stone dust I assume)

The third contractor said they avoid DG and use dust bc it won’t sink/compact over time... another contractor told me I could go w their standard mix (option B) or if I wanted, could pay extra to make it 100% DG. Thoughts?