I just tried out my new Milwaukee M12 drill & impact driver. Wow! I thought my 9.6 NiCad drill was powerful but it is wimpy compared to the M12. So much more powerful than I expected that I think I'm going to take them back and get the M12 Fuels. The Fuel drill is 1/2" rather than 3/8. But the biggest reason is the two power settings of the Impact driver.