I’ve always thought the 24v cordless drill was an odd creation. An 18v drill will cover most of your use cases. You can drill holes and tighten screws all day with an 18v drill. And the 18v drills are the right size for using a drill all day: big enough to have the power and not so big that it wears you out.
The biggest reason to move up to a 24v cordless drill is for more power. And you can certainly get more power when you have 24 volts to work with. And there are certainly cases when you need more power than most 18 volt drills will provide, like drilling through concrete and brick. But the main reason people use a cordless drill rather than a corded one is the convenience of not being tied to an outlet. If you need lots of power, people have always went with the corded drill. It’s no longer convenient to have a cordless drill after it gets over a certain size and 24v drills seemed to always be in that no man’s land of too big to be convenient and not powerful enough for how big they are.
But technology tends to change things. As we pack more power into batteries, we can go towards less weight and size and more power at the same time. And that’s what Milwaukee has done with the 0724-24. It’s a 28 volt drill but it certainly belongs in 24 volt “category.” It won the 24v cordless drill category at bestcordlessdrill.net. It has the power to justify being a real hammer drill, but it’s not so big and weighty that you don’t want to carry it around with you.
Best Cordless Drill 