Tank or Brute

I have a second account and I was wondering which would be the most effective farmer: SS / Fire Brute or Fire / SS tank?

Thanks for your input

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50 EM / SR Stalker
50 Spines / Regen Stalker
50 Claws / SR Stalker
50 DM / DA Stalker
42 DM / EA Stalker
40 Nin / Nin Stalker

Just farming? Brute.

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