I have a Skil 3/8in drill that I paid $20 for in the early 70s, single speed, plain bearings, but hobbed steel gears so it's still going strong after lots of abuse. I have a Skil 'Classic' circular saw that's evidently bult the same way, purchased maybe 15 years ago, and works well with decent saw blades. These days more and more things are built in China, not built to last but have more doo dads on them, so look over current products carefully.
A classic high quality circular saw has always been a Skil hypoid gear saw, magnesium if want light, but they were $130 when I bought my plain Skil saw years back.