Emperor's are good enough for me, if you don't mind the trickling of water sound, which I personally don't. Before, the only thing I had used was a Whisper, and now that I have 2 Whispers, one Emp, and an Eheim running, I would have to say the Whisper is my least favorite. Whenever I am not working wiht the Whisper, (not maintaning it,) I love how free I feel. No constraints from the thing dieing on me. As a matter of fact, one of my extra's I am using on a small tank quit over vacation, while I was gone. Just stopped working. I lifted up the thing, turned the impellor with a bottle brush, and it started up again. You'll have to learn to do this with your Whispers soon.