We went to Harbor Freight one time... looked at the nail guns and decided they were crap, but we got a cheap tile saw that has worked beautifully for us so far and taught us enough that next time we’ll feel justified in buying a more expensive one, if need be.
But yeah, mostly crap.
With power tools and such, it's almost always Makita, or, as in my supercharged sander, Festool. We found an awesome set of a Makita screwdriver and drill at HD just before Christmas. They're both cordless, and very lightweight. The batteries aren't super powerful, but they charge quickly. They're particularly good for working overhead; your arms don't get so tired. He bought the set for me, but he's the one who's mostly using them.We're waiting for them to go on sale again, so we can get a set for him. ;o)