I'd say the star logo, which you guys have given the Zenith forum, is porbably the most timeless Zenith logo, and applies to both vintage and modern equally well.
That "NATO Star", for those not used to it, was actually conceived as two stylized 'Z's crossed together. It succeeded the Z-in Star logo, and was replaced by the hard-to -describe square-with-internal-star-sort-of logo, since replaced by the plain 5-pointed star (like on the flag the Titanic flew, and the Dallas Cowboys).
The best of all of the logos in my humble opinion...crossed Zs.