I have a 46 gal bowfront that will be stocked with a few angelfish and 2 plecos (a King Tiger and a Gold Nugget). Which filter do you guys think is better. I thought it was the Emperor but there are all these good reviews about Aquaclear instead of the Emperor. I thought the Bio-Wheel was an awesome feature, but many people said it is unnecessary and is a pain to maintain. I am currently running an Emperor 280 and it is a little noisy but not too bad, will the Emperor 400 be much worse in terms of noise? Can someone help me out please?