Depends on what you mean by easier. While most will get 2 a week from 32 or 34 Prison of Elders, some will get an extra one from Skolas. Then there's the possibility from Nightfalls and two with Iron Banner when it comes around (one from rank 3 and 5 each). Doing this with 2-3 characters could get about 5-7 etheric light a week, maybe more with nightfall.
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32 drops armor core. No etheric light. Inly 34 and 35 poe drops light