I have a penchant for the Redemption Oath paladin, but one I like a lot is the Ancients Oath, that one seems what a ranger could have been if they put some work in it.
Redemption is pretty cool; in a recent campaign we had two paladins: I was playing devotion path and the other was Ancients - some very cool abilities (like Mistry Step which I think Vengeance also has) definitely ranger-like.
