I know you are looking for input on an 8-16gal AIO, but I recently took down my BioCube 29 that I had for two years and loved it. I know with the BC there are ways to mod. it so it will function even better. I did weekly 5 gal. water changes and never had a problem. It had a Sunpod 150W MH over it and I could basically keep anything I wanted in it. I thought it was jus a cool little AIO.