I'm guessing Die In a Fire or something along those lines, judging from his multiple posts about how much he hates Aquaclears.
IME, not opinion, Aquaclears are the best HOB
filters around. They ARE quiet when properly maintained and can give you years and years of service. I've been running an AC50 for 4+ years, and never had any noise problems with it.
I do bi-monthly maintenance on it and never gives me an issue. My AC30 (well not mine anymore) also gave me no problems other than the occasional loss of prime during power outages.