Dechurched or unchurched?

Yesterday i wondered whether there are more dechurched (those who have once been in the church system, but since left), or unchurched (those who have never darkened the doors of a church)?

Sure, globally, the unchurched is an overwhelming victor, but on a more local level i think it begins to balance out. This is especially true once you consider how many of the generation above me used to go to church, even if they only went for meaningless ritual.

But my question resolves around this... Which section of the lost are more difficult to reach?

Those who haven't experienced church and fall for the stereotypical ideas about Christians and church, or those who have been in the church world and left for whatever reason (boredom, bitterness, moving away...).

Equally important, do we look to reach both these types of people evangelisticly? And, do we use the same strategies for both people?