Anyone around level 64 try having someone PL you on Chigoes? Find a PT killing Marids and ask if you can have all their fleas... Or get your LS to make a PT to kill Marids. Then just solo Chigoes (VT-IT) that pop and have your best WHM friend toss a few Cure 4's while you rip through them solo. I was getting up to Chain 7-8 for 300-500 per mob without XP ring... it was just silly. One Jet Stream takes it down to nearly dead. Then a Bludgeon, and voila dead.
I'm guessing get a PT of 5 NIN/WHM's and a BRD at level 60-62 and you can just kill Chigoes if you're willing to find a few friends who wanna kill Marids...