Sector choice affects three things: trek difficulty, lodge options and how you combine Bwindi with the rest of your itinerary.
Buhoma is the original and most accessible sector, with the gentlest average terrain and the widest range of lodges from budget to luxury. It suits first-time trekkers and anyone travelling with older family members. It is also the easiest to reach if you are coming from Queen Elizabeth National Park.
Ruhija sits at the highest altitude and has fewer lodges, but it is a good link point if you are travelling between Bwindi and Lake Mburo or Kampala.
Rushaga has the most gorilla families of any sector, which means more permits available on short notice, and it also runs the habituation experience for those who want longer time with a family rather than the standard one hour.
Nkuringo is the toughest. The terrain is steep, the reward is fewer crowds, and it suits fitter trekkers who have done at least one trek before.
None of the sectors guarantee an easy day. Bwindi means “impenetrable forest” for a reason, and terrain within any sector varies by which family you are assigned on the day. Fitness matters more than sector choice for most people.
For a full sector by sector breakdown including which lodges sit where, read /bwindi-sectors-explained-buhoma-ruhija-rushaga-nkuringo/. If you are also weighing Uganda against Rwanda for the trek itself, /which-gorilla-trek-is-harder-uganda-or-rwanda/ is worth a look too.