The bottom half of the 5A 171: Steinmetz, Malloy and Sponsel. Payne should be fine getting through the top half--but it is state! Whoever gets through that bottom half could be pretty spent, though. I don't know much about Pipkin, Roberts or Zackary. They all have respectable records I just don't know anything about them.
Also, the 5A 160 bracket has all six of the ranked guys and the top four of them are solid. Again, I don't know anything about the guys ranked fifth and sixth--but I have seen all four of the top guys and they are all studs. I know there are some other good brackets namely the 4A 171 for my interests, but I won't bore everyone with all my other opinions.
