Nose mythology's the best.

Since Troy can just be any city that existed around the appropriate time at the mouth of the Black Sea that was in some way involved in a war with the Greeks, which, being that it's in place to control vital sea traffic between the Caucasus and Greece, almost certainly would have happened, it's almost guaranteed that 'Troy' existed. It's somewhat less likely that the Achaeans united together to fight a war over a stolen wife, or that many or any of the various details are at all accurate. But there's a Tell where there should be, so good deal.

I'll take Thucydides over all comers. Only Tacitus and Herodotus come close, but Thucydides just rules beyond ruling.