The best powercable for power amps?


I hope to find the right powercable for my Nu-Vista 300 poweramp.

My system: Nautilus 800, Meridian 800 DAX v4 ( model 2005 ), Musical Fidelity Nu-vista 300 Power, Valhalla loudspeakercable, 2 Valhalla powercables, Acapella rca, KE Powersource ( conditioner )

I was thinking about the Shunyata Anaconda Alpha, Elrod, Purist or......

Just give me the right advise for the cable what can give me the whole freq. spectrum van the lowest to the highest?

I used the following cables: MIT AC-1 Oracle, I liked this one exept it missed the lower freq. Valhalla, I missed the focus and didn't like the harsh sound in the low freq. Also the mids where not involving anymore. The Electraglides miss the power in the low freq also.
leonx
I happen to like the Purist Dominus the best, but before making comparisons, first check to see that all the ones you audition have at least 10AWG gauge conductors (I'm not sure if all those you mentioned do.)
The Purist Dominus has been the best so far in my system.
Compared to a number of other power cords of fame deep clear bass and yet articulate in all ranges.Likely the last power cord I'll need or want.
Good thing too my wife was getting fed up with all the damm cables lying around.
Peter