The NAD has plenty of beef to drive these speakers correctly. I own these speakers mated with the VS1 subwoofer for my home theater rig..I also use the VR1 speaker stands...I'm using a 120 watt a side Consonance REf 150 hybrid integrated...these speakers like power and the hybrid lets me get some tube benefits.If you really like solid state I'd get a used BAT VK200 or McCormack DNA .5....much better sounding than your choices and not hugely more expensive...you'll be happier in the long run and save on equipment upgrade costs.
Larry
Larry