This drill is an absolute work horse.  Besides doing lots of hole drilling in different materials, I've used this drill to mix thinset mortar, grout, and joint compound....it just churns away and barely gets warm.  After burning up two Dewalt drills, I decided to go with Milwaukee.  The keyed chuck is the best on the market and you never need to worry about it slipping once you've secured it properly.  The drill has a lot of torque, so use the additional handle and hold on tight!  Great drill....great price!