I valued AEI at around 1/3 the MC of ZNO several months ago. Just had another look and looks like on that metric they are comparable value again after ZNO's current stellar run! I think they are both good growth stocks, but have ZNO a nose ahead based on pace of growth acceleration, margins and brand penetration. Still, always a moving feast. May be a good hedge for my irresponsibly overweighted ZNO portfolio...
