Here ... I entered "case fan" into newegg's search box and sorted the result by "BEST RATING" ...
... Some of these fans have more than 500 reviews !!!
... Once you open the reviews (to read) for a given fan, you can select "SHOW WORST REVIEWS FIRST" ... the worst reviews may give clues to common probs (noise, etc) if 10 people are saying the same thing, for instance.
OOOOO 5 eggs ! OOOOO