well... its better if u use d bow + ancients with void armor (when pjing only)
for multi (with friends) if all rangers well use barrage and rune c'bow + d bolts e u can use void armor also...
There's no such thing as an Obby with ancients. Obby maul pures have 1-20 attack. Doing waterfall gets you 33 att and str, which is a requirement for DT.
Blitz/Maulers, Range Tanks, or Zerkers are the best PKers.