New Wolf Von Langa SON Owner!

I am the new owner of a pair of Wolf Von Langa SONs which I bought from Gestalt Audio at AXPONA last week.  I am just in the process of dialing them in with Colin in my small listening space of approx.  11' X 11'.

The Power Supply Unit for the speakers does not come with a cord, and I am currently using the stock cord that came with my Audio Research I 50 amp.  How important is having a high quality power cord on the PSU?

I was surprised to hear the difference in sound using the small rubber pucks that came with the speaker.  Has anyone used IsoAcoustic footers on their SONs?  Colin recommends them as a step up from the pucks.

I am currently using Masterbuilt Performance Line speaker cables.  I sounds like there is real synergy with the Hijiri cables and the SONs.  Comments?

Thanks