The issue is, what defines "quality" these days in jack stands? I have some that seem quality, but they aren't really that different from HF's stands. (Which also aren't different from anyone else's...)
Set the stand on the floor or other level surface, do all the feet touch or does it wobble?
How are the welds? If they are under cut, cold, pin holed pitted or otherwise look like an amateur did them they are junk.
How thick is the steel? Is it angle iron or sheet metal? I have formed 1/8 in sheet in my garage by hand and it didn't take 3 tons of force to do it. I won't buy sheet metal jackstands.
If they have castings look for cracks or porosities. Bang them together, if they crack or chip leave them at the store.
Basically look them over and ask yourself are they up for the job? Does the design make you question if they are strong enough for the rated load? When in doubt don't buy them.