At first I was playing pretty much exclusively in 3rd person, but lately I've been doing basically half/half. In battle, I always play 3rd person. Also, when traversing terrain outdoors, it's 3rd person. Otherwise, in towns and indoors, I like to be in 1st person as it's less confusing with your character out of the way, and it's better to talk to people and interact with items in 1st person.
So both.
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