Quiet Return Pumps

I have a 75g tank with dual outputs from a 30g sump. I currently have a danner mag 9.5, and this is replacing a Taam Rio 17HF. I replaced the Rio cause it was kind of noisy. At first the Mag 9.5 was quiet, but once it broke in it began making a louder humming noise, on top of the regular pump sounds.

Does anyone have any recommendations on quiet return pumps? These would need to be in-sump returns. I need it to be in the 850-1100 gph range.
 
Eheims are the way to go, for sure! Very quiet return pumps, and they'll last forever if you maintain them.
 
I have a QuietOne that a really like really reliable and no issues over the years on my reef.
QuietOne 5000.
 
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