Which offer to buy, cyber Monday 2018

I can buy either 2 black panther vault or one Odin one.
I have 8 5* , all memes except dupe like cage and undupe x23. I have dupe my groot ,moon knight two times and kamala khan too.
Got old man logan from last pool.
Not done uncollected.
So which one shall I buy, from Ken I can open feature 5 star crystal but from other I get some 6* shards and a full crystal.
Plz advice
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