A fair bit of their stuff is junk. A fair bit is surprisingly good quality. A fair bit is middling. Buyer beware.
I have a bunch of HF hand tools, HF jackstands, and a HF steel low-profile jack. They do the job, the jack pretty darned well. Some of the hand tools, like the flare nut wrenches, held up to abuse far better than I thought they would.
The stuff I have is either proven to be good, or looked to be well-made in the store.