Here are the options: Adire Rava: http://www.adireaudio.com/rpd/rava.htm Parts Express kit: http://www.partsexpress.com/pe/showd...ID=15171&DID=7 The second one is $50 cheaper, but involves some assembly, which pretty much evens the field IMO. I'm pretty sure no-one here has heard both subwoofers, so this thread will be based mostly on speculation. I'm also pretty sure that more people would have heard the Rava than the PE kit. My question, to those who know about these things - based only on the information available on the websites, does anyone have any opinion on how the PE kit would perform compared to the Rava? Informed guesswork and speculation is more than welcome.