I get the sense that Harbor Freight is not as good a value as they used to be. Maybe it is just that conventional hardware/tool stores had higher profit margins in the past. Now that the big box stores compete with internet, it seems like I can usually buy a name brand tool for just a bit more than the harbor freight disposable. And now that craigslist and ebay make a market for used tools, you can get that extra cost back when you sell.
There is still a narrow slice of the market that they perform; rent if you only need it once, and buy quality if you use often. If you have cheap space to store items of questionable value and utility and don’t care about resale, go Harbor Freight.