The best drill is the one that suits your needs. Don't get sucked in to the
18 volt set if you don't need it. I had a cabinet shop and we used the Dewalt 12 volt with the XR batteries. We could drive screws all day long. The batteries lasted a long time and more importantly, the drill was not too heavy. WE checked out the 18 volt set and it is very uncomfortable to use for long periods or over your head. If you want to drill steel or concrete you need a bigger drill. Period. I have almost 10 years on the original 5 drills we bought and we love them. They can even drill largish holes in wood. max