I agree with Mannyrock for a lot of the tools at HF. I typically buy a tool at Harbor Freight that I may use once in a great while. For something that's going to get everyday use, I buy name brand tools. For instance, my go to power screwdriver is the DeWalt 8V MAX* Gyroscopic Inline Screwdriver, I use it so much that I've worn off much of the lettering on the adjustment collar! 
My saws are the DeWalt jobsite 10" saw and I have an Hitachi chop saw, both have served me well.
For stuff I use once in a blue moon, the Harbor Freight stuff works fine.
