I have two favorites I have been mentioning for a long time now: Menace 11 and Mister Mystery 13.
I feel both covers are very dynamic and powerful. The Menace stories are just plai good Atlas. The Mister Mystery has some outstanding stories - my fave being the gossips.
Neither are broken out and, alonf with Menace 9, 11 is my favorite Menace issue. MM13 is, in my opinion, subtler than 11 or 12 but much more chilling.
Love this Gene Colan cover - 9 IS borken out in the guide but just think it and 11 are the 2 best Menace issues.
All those zombie covers are great.I really like the whole run with a slight sweet spot for 5.