 Stewart and Plotkin show that the good strategies that are also ZD are exactly the generous ZD strategies, i.e., those like GEN-2 that concede a greater share of the payoffs between punishment and reward to the opponent. When the investigations of Hilbe et al. are extended to include focus on the good strategies and, in particular, to the generous ZD strategies, the patterns exhibited turn out to be quite different. In small populations, strategies spend little time near these strategies in these two groups (relative to chance) and in larger populations they spend a much larger proportion of their time there. In big populations a very high proportion of the strategies most strongly favored by evolution are both good and ZD. The story is not entirely straightforward, however. Strategies that are good but not ZD are moderately favored by evolution, and a few strategies that are neither ZD nor good, are also strongly favored.