Well It depends upon what you want your army to do (thanks to jasonfly for explaining these terms to me still a 40k noob) Footslogging, Mech Close Combat, Shooty, Hybrid between CC and Shooty. TBH you would probably benefit from a well balanced army mixing in elements of each so that you have all bases covered. But as for the PM's Vs. NM'S PM's will survive better due to the toughness but you could inflict mass damage with lash prince and noise marines due to the templates. (use lash prince to mess with the layout of troops and bunch them together so that the template covers as many as possible and "nuke" them.
Honsu
Honsu