Richard,
I have that axe! And yes, it would be great in the zombie apocalypse! Personally I prefer the one slightly longer, and I even have the longest of the three and I use them on a regular basis. I own but no longer use more traditional axes with the usual long handle and heavy head. If I have to really chop, I use the longest estwing axe. It has such a narrow blade and head that each swing bites further into the
wood than my traditional axe. The medium size is great for all around use and the camp axe is a fantastic one-handed tool.
Eric