remember to think about what other cordless tools you might want (or already have) and look to reuse the battery/s across your tool ecosystem...I use Milwaukee 18v brushless tools and have two battery's covering 4 tools (you only have two hands). My advice would be to stick with one the good brands mentioned so far, Milwaukee, Makita, DeWalt and Bosch as they are usually the only brands used by tradies, and for good reason.