Can’t really answer this question without knowing what your parents value, what they use the vehicle for, etc.
IMO the 4Runner is in a different class, with 4 doors and all. I can’t really figure out what Toyota was thinking putting 2 half-assed doors on a vehicle that big. Oh well, probably thinking the same thing as the old 2 door Explorer sport. :bloated:
Xterra’s are better than both though. 
4Runner > Xterra > FJ