Anyone tried these S&P TD-SILENT inline mixed flow fans?

I haven't used that model,but s&p is a pretty good brand,they are really quiet.

I have 2 of the lower power ones, TD 160/100N silent and I love them so far. Be sure to pay attention to the ratings for air and match to your needs accordingly, because they are certainly amongst the quietest fans around, but you don't want to be disappointed if they don't pull enough air for what you are setting them up for. I use one for fresh intake, and the other hooked up to small can-lite filter for exhaust. I'm considering getting a third to replace the closed loop fan I am using currently on my cooltube too.

GrowersHouse has the Vortex line which look like a rebranded S&P and up through tomorrow there's a minor discount for an 'introductory' period...