I have to say that my Sun-Sun 304b has been going strong for 3 years now. I have had no complaints. i can't say much for noise, all i hear in the room are the Hang on Back filters. For my 125 with a 55 gallon refugium set up, I use a combination of a DIY Walmart drawer/pot scrubber/floss setup , a HOB, and a Sun-Sun. I have always been of the opinion you can never have enough filtration. I just bought another Sun Sun for my other 55. All i have ever used on it was HOB's. Lets see if I have as good of luck on this new one. On the Sun-Sun, I have never had a UV bulb go out, but I have replace it twice just because of age recommendation.
PacuOwner