[acrophobia]

What about a low drop shoe with some cushion? Lots of brands are coming out with ~4mm drop shoes (Saucony has more than a few and Altra is 0mm drop); this type of shoe might help your foot strike to become more natural, and having some cushioning won't leave your legs feeling trashed. I tried some zero drop and almost zero cushion New Balance shoes last year and just couldn't run in them without feeling beat up.