Try zhalo supercell or bad juju to get the primary one. Secondaries i would go for telesto on a group, a sidearm with feeding frenzy/outlaw would be decent (if it has reactive reload to go with outlaw/FF, then it's a keeper). But this is just what i think. Edit: nvm. You are using bad juju. Honestly, i just walk in the strike and just do it normally. Kill everything till it's dead. I don't expect things to be counted exactly.

[quote]Ok so I have have been trying to get the 9 rapid kills with both primary and secondary weapons and I have been using the Will of Crota (Omnigul) Siva strike I thought the thralls in the first section would be great but after 3 hours I haven't managed 1 rapid kill. When the thrall wave starts 'm pretty sure I'm killing way more than 9 (with a single weapon Bad Juju - auto reloads on hits, and in a very short period of time) so do the thralls count? Is there a better spot or is there some other trick to this? [/quote] Bungie has issues counting. Takedown medals are horrible. I punched every thrall i could in the beginning of the malok strike and it counted 4 maybe 5.