Here is a review that I found online:
Our crews use a lot of different makes of cordless drills and when they need one from the shop they used to grab one of the Makitas but now their first choice is the DeWalt DCD970 drill. The DeWalt deliver a lot more power over a longer period of time. Part of this is their having the biggest (and heaviest) lithium ion battery and part of it is the 3 speed gearbox.
We use the Hole Pro adjustable hole cutters a lot and the low speed setting is perfect for good cutting speed and having enough power to cut 8-1/4" holes in TJI or plywood. The middle speed we have learned makes for smoother cutting with hole saws though we have switched to using Blue Boar TCT hole cutters 90% of the time. We can easily cut 6" holes in inch thick plywood with an 18 volt cordless and the very efficient Blue Boar hole cutters.
We use the Hole Pro adjustable hole cutters a lot and the low speed setting is perfect for good cutting speed and having enough power to cut 8-1/4" holes in TJI or plywood. The middle speed we have learned makes for smoother cutting with hole saws though we have switched to using Blue Boar TCT hole cutters 90% of the time. We can easily cut 6" holes in inch thick plywood with an 18 volt cordless and the very efficient Blue Boar hole cutters.
