I have the older ro dc10500 on my tank and love it. Tons of flow, dead silent. I run on level 4 and it powers 2 reactors and my chiller and still has tons of flownin my 110g. I would suggest that if your going to plumb it to a manifold for rewctors, etc get a larger pump then you need. As for the sp serious I couldnt give a review as I've never seen them but from what I've read the sound like a good pump