Which tower fan is quietest for sleeping?

Community reviewers most consistently single out LEVOIT for low-speed quietness, with one r/BuyItForLife poster saying the LEVOIT is quieter overall while the DREO offers more raw power. DREO's sleep-mode models are also widely praised as quiet, so the practical answer is that both lead the quiet category and the choice comes down to whether you prioritize whisper-quiet low speeds (LEVOIT) or stronger airflow (DREO).