I don't adjust the hands I play much according to structure. In stud/8, the bottom line is that you usually have to show down the best hand in order to win. If the game is on the tight side, I might try to steal a bit more in the higher-ante games. The problem with stealing in that last game is that the bring-in is already half-in, and he usually has a good card on board. Does that last structure actually exist?
If people are gambling, I love the first structure. That middle structure is
much more conducive to gambling, and I think it's the best structure for this limit. And if it pisses off the nits who infest this forum, so much the better.
I don't play in tight-aggressive stud/8 games.