I prefer waxing as I believe a waxed chain is more quiet.
I too use Silca wax.
My chains, pre wax time, were always quiet though that is because I take very good care of my kit and cleaned/lubed my chain weekly...they also lasted a lot longer because of my maintenance system.
I replace my chain monthly with a freshly waxed chain and have several in the queu ready to go.
But it is a bit of a laborious maintenance system.