I wouldn't lump Grizzly in with HF products in the "quality" dept.
I would. I haven't seen a mill from Griz. But I've tried drill presses and table saws. And I own a couple of vises from Griz. The power tools are horrible in tolerance and repeatability. The current China made Craftsman is the same. The vises I own look exactly like the vises from HF, right down to the tool marks and finish. Even the logo is in the same place, looks done in the same manner. Lots of porous castings, rough bearing surfaces etc. I would bet they're from the same Asian factories.