Audioquest Blizzard vs Tornado Source for dac ?

For those Audioquest cable/pc users out there. Any feedback borne from experience comparing the AQ Blizzard to the Tornado Source power cords for a dac. What were the impressions made in terms of overall SQ. Is the Tornado really a huge advance over the Blizzard for source components. Currently, I have both the Thunder and Tornado on separate amps. Ultimately, would the addition of a Tornado Source to replace the Blizzard be a worthwhile venture. The only real concern is a resulting sound print being too bass heavy, slower dynamics , less details and less communicative with high end freq response. Please share your experience and thoughts.