NEX-7+LA-EA2 or NEX-6+LA-EA1?

or NEX6+LA-EA2? CDAF+on sensor PDAF+translucent mirror PDAF = best AF possible? or would that not even work?

I'm thinking about getting an LA-EA2 for my NEX-7 but was wondering if a NEX-6+LA-EA1 would work just as well? Seems like that'll reduce some bulk going the A-mount route...

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