About speed, you don't really need fast renders in the poserverse cause typically people only render stills and are willing to wait overnight for them. Much more important is ease of use and compatibility and iRay is amazing in this regard. However 'evil' they may or may not be, DAZ have definitely done a lot of good work towards making iRay a real alternative to 3delight. SM could def. learn a thing or two from them in this. And note that as long as you have a decent current gen gaming card (970, 980, 980ti etc) iRay can be pretty fast as well.