i have the rio2100 in my setup and its really quiet. its been running for about 2 weeks now. i got it cuz its 25w, 692gph and it was cheap at a local petstore. but let me remind u that the rios were made to run submerged (thats what the guy at the store told me), i had to seal the the inlet were i put my barb so nothing well leak. maxijets can run inline, i had my 1200 running inline for 3months w/ no problems. great lil pump!