I guess I have way too many tools from HF. The blue 4 1/2 inch angle grinders for $20 on sale are great. I use them almost daily, and got tired of shelling out $90 for Dewalt grinders only to have them die in a year, so I started buying the "heavy duty" ones on sale at HF. I have not killed one yet in three years. As far as grinding wheels and consumables, I don't buy at HF. I can buy brand name flap discs and wheels in bulk for half of what the HF stuff costs, and it lasts at least 2x as long. I have thoroughly abused a 2 ton engine hoist for at least 10 years, never had a problem. I think I paid less than $100 for it when I got it. I use it in the shop almost everyday to save my poor back. I also have an old HF Mill/Drill that I picked up at an estate sale. It is bullet proof. Other than the fact it has a round column it works great, plenty of power and is very useful. I have no idea how old it really is, I would have to say 1980's sometime...
The fact of the matter is this, you can go out a spend a small fortune on tools and not take care of them, and they will fall apart and fail. You can also buy cheap tools and take care of them and be careful and they will last the average Joe a lifetime. I own a small Machining and Fab shop, and I use a lot of stuff from HF. I know what the limits are, and I am careful. I make money with their tools every day. For most people the tools from HF are good enough. Some of my customers ask me why I buy that "junk" from HF? I tell them that I would rather buy it there and pay $10 for it than to buy it from Snap-on for $100. That is $90 I get to keep in my pocket, and use for something else.