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So оба is always going to be easier to use; just doesn't apply to 2 collections/groups of things/people, which is where и те и те could be used?

и те и те both (for 2 groups of things/people, colloquial)
и то и то both (for 2 things, colloquial)
и тот и тот both (for 2 people, colloquial)
и то и другое same as all...