Hirhurim just had a post about this topic, where he discussed some reasons that people should follow the aruch haShulchan. Yet in many circles, people just follow the Mishna Berura and rarely even ...
When one has a question in halacha and finds an answer in the Mishneh Berurah (or Aruch HaShulchan, or similar work), why can he follow the answer provided? Why doesn't he need to ask his rabbi first? ...