Discussion Treblinka or Majdanek: Which Should We Visit?

My husband and I are planning a trip and have been researching ways to get to Treblinka via public transportation. We're trying to decide between visiting Treblinka or Majdanek. Both have significant historical importance, but we're curious about what each site offers in terms of experience. If you've been to either (or both), could you share what stood out for you? Also, any tips on transportation or what to expect would be really helpful. Thanks!