What did u do for diaper disposal? do u recommend the diaper genie, champ, dekor? how often did u buy refills?

i thought the diaper genie was the only choice but it sounds like the diaper dekor needs refills less often. the diaper champ uses regular trash bags but how often do u change them? and a regular trash can is always an option but i live in a small 2nd story apartment and taking out the trash requires going down a flight of stairs and a large hill