I have this Milwaukee 2407 with their M12 (as in volt) battery system. It is a chunk but the grip placement makes it nicely balanced and the battery size/shape means I can get inside a cabinet and put the screw where I want to without some honking big battery constantly getting in the way. It has a 3/8" chuck but that's good enough for about 89% of everything. I drilled through a steel fire door & door frame with mine (not the right tool to use to be honest but) to put in a pneumatic closer, and I went through two drill bits but the drill did fine. Just used cutting oil and steady pressure. I'd recommend it with the caveat above about discounted innards in mind. I got mine on Amazon I believe where the user reviews are pretty merciless when they find a power tool that has cheap plastic inside. I expected not to like it or for it to last but so far I like it and it isn't broken.