i have been running my new emperor 400 for 2 days now... seems pretty decent in terms of water noise (mine is in my dinning)
too quite for me would be ringing in my ears... i would like some sound somewhere.
but again... mine is not in my bedroom. and besides... I think emperor has a more decent way of saving money in terms of external filter setting aside canister and wet/dry... it has a non-disposable bio-wheel which will last forever compared to canisters and other filters which you need to change 50% of the ceramic rings that houses your good bacteria. i'll stick with emperor 
but again... mine is not in my bedroom. and besides... I think emperor has a more decent way of saving money in terms of external filter setting aside canister and wet/dry... it has a non-disposable bio-wheel which will last forever compared to canisters and other filters which you need to change 50% of the ceramic rings that houses your good bacteria. i'll stick with emperor 
