turkey3_scratch :
What makes me sad is I'll probably see a bunch of Newegg reviews for it while this beauty, the FSP Hydro X 450, sits with no eggs
I don't know of any stats or polls out there, but my guess is most people don't spend too much time actually drilling down into details of things like Japanese capacitors and ripple performance when buying PSUs. Wrongly, they see things like "Gold" rated for less money and more wattage and run with it from the more familiar and usual suspect brand names (Corsair, EVGA, Seasonic).
Also where are all the Johnny Guru FSP reviews of the lower powered units? FSP needs to get themselves better known to main stream builders. I see they've gotten their Hydro X prices down more competitive with the G2 series unlike when first introduced back in the Spring when Tom's first reviewed the $80 450W one ($80, $95, and $110 for FSP's Hydro X's 450/550/650 at into). Here are is a current price example of 550W between the two:
http://www.newegg.com/Product/Product.aspx?Item=9SIABP94H47035
http://www.newegg.com/Product/Product.aspx?Item=9SIA2F84BD0573