robax91, You mean to say that you trust manufacturer's numbers on db? Case fans are NEVER as quiet as they are supposed to be.
Usually people comment on the product, not the users. You might need a new hobby if you commented just to talk down to someone. As for the DB, maybe Tom's will review them to see how quiet they are, but it's hard to find out when several parts of a PC makes noise. Even if they are 20-25DB that is still quieter than standard fans that are 25-30+ DB.