in my experiences here, Qulun Dome has a much higher drop rate on tests then Beadeaux, while camping the quad god/diamond NM we got at least 3 tests of blm, whm, war, pld & rdm(ruby nm)
I went to get my Coffer Key the other day, we droped down going into the tunnel and agrowed one, when we killed it, it Droped DarkSteel Leg Armor.. I cant remeber the full name tho.. lvl 49 WAR/PLD/DRK leg armor