Well...I've tried Harbor Freight tools before myself, and I'll say this. I don't think you'll see too many construction pros saving a buck by going there. For the occasional user, yeah, it's a great deal, but their products don't hold up for shit if you're going to use them on a regular basis.
Then again, why should us "once in a while handymen" have to buy pro-level tools? If I'm looking for tools for my bike, I'm not going near the place, but if I needed a finishing nail gun that I'd probably rarely use, I'd go for it.