Soooooo, this weekend I did an experiment to see if I preferred the amps directly into the wall or into the high current outlets of the AQ Niagara 5000. I only have one dedicated line feeding my entire system so I took my PrimaLuna monoblocks and ran one into the dedicated line as a stereo amp (these amps allow both stereo and mono operation) and let the other sit idle. I plugged the rest of the system into the Niagara 5000. What I heard was a reduction in what I would call glare. The sound was more open and natural with a reduction in listening fatigue by removal of some harshness in the high frequencies. I am able to run some additional lines so my plan is to have three dedicated lines (20 amp, 10 gauge, equal length). One running the front end with the Niagara 5000 and one for each monoblock plugged directly into the wall.
This really highlights the importance of getting the power squared away in order to maximize system performance. I'm not sure anything is more important other than room acoustics which is still #1 by a large margin.