Grizzly says that their units are made to tighter tolerences than the others. Not sure I'd believe that, but I hope that any parts needed would be easier to get from Grizzly than Harbor Fright. I bought the smallest Grizzly lathe, which is 3" x 14", I think. It's fine for making venturi, head, spinner & prop driver mods. It's ok. I just set it on a B&D Workmate. The lathe weighs 78 lbs, so I can pick it up with one hand and stick it on a bottom shelf, etc. The one thing I gotta say, is that the tooling will hurt more than the lathe itself. The one thing I did wrong was to get a 1/2" Jacobs chuck, when a 3/8" would have been fine. Wish I had stubby drills, too, and some more turning tools. It never ends...

Steve