I use Silver State Armory brass and load my own. Remington brass sucks (large rifle primered), Hornady is okay. I use Reloader 10x and 110gr bullets. Join the 6.8 Forum, some of the members sell brass.
I buy SSA or Hornady, both around $1 a round. I am saving brass but as of yet I don't reload. SGAmmo has had some good supplies and prices on 6.8 lately.