So was I. I started with a Fluval 405 after hearing so mat great things about them.
Its a fine filter - lots of flow, plenty of room for bio media, nicely built... but it was noisy.
I have a Craigslist 204 that is butt silent... I know the 405 is bigger, and will likely be louder... but its prohibitive, and I'm selling it.
Went to Eheims... 2213, 2215, 2217's.... so much more quieter than my 405.
They're on eBay and Craigs all the time for cheap. Whatever parts they don't have I can also get cheap. I now have 6 Eheims that are silently churning away - and my one 204 Fluval that I have to go check to make sure it's actually on.