IQ Filter!?

Come on guys. Seriously? Tetras new IQ (When I say new, I mean 1 year ago new, I don’t check out new products that often, lol.) filter has a “Built in” Ph buffer. And is their Quietest filter yet. I believe Whisper filters are very quiet (I have had several over the years), But is this one really the Quietest? (If you have owned this filter, I would love your opinions.)

(Image: http://www.tetra-fish.com/products/filtration/whisper-iq-power-filters.aspx)

I posted this thread to ask a question. Would this be worth the extra few bucks to get this filter, than say a regular filter? I am looking into getting a 20g long. Is a sponge filter better than a HOB filter?

Thanks in advance!