I am just a home user, but have had about every brand of power tool there is at some point, and I have had the best luck with the newer Bosch stuff. I have a bosch 14.4 that I love. I use the drill/driver the most.
I also have a bosch worm drive circular saw a sidewinder saw, a jigsaw, and a detail sander, but in those more seldom used tools I buy the corded version, or in the case of the circular saws - no cord but a plug you plug an extension cord into - greatest thing ever, IMO.
i have a dewalt corded 3/8 drill that I have chuck issues with, and a dewalt Miter saw that I have no problems with. A dewalt corded 4" angle grinder that seems pretty durable.
I have some older craftsman power tools that I don't use much, but they work, and a big B&D 1/2 drill, and a big angle grinder that both still work fine when I need them.