I just got the new milwaukee super hole hawg, it's cut hole production time nearly in half, except it also burns through bits twice as fast. I nead to find the best 7/8 auger bits out there. the other option is to change bits when they heat up too much, but that'd take some time out of my production. The units I'm working on now, are 8 family multiplexes, wood construction and we drill these units out each week and a half. Thanks take care Brian