In reply to captainzib:
They're both junk.
I'm the guy that has the final yes/no decision on what cheap chinese junk we import at a similar company to HF.
I also get to deal with all the returns and getting replacements / compensation from the companies in China when we do get something that is crap.
Sometimes we hit a home run, often the tool is plenty good for home use. Sometimes we get a load of junk because they switched factories on us and now we get stuff from their "D" students.
I haven't found a good quality, cheap aluminum floor jack yet. They all seem to have seal problems, the swivel casters break and fall off or the main lifting arm cracks at the pivot.
We don't even carry an aluminum jack in our catalog anymore because of this.
Buy a good, steel floor jack from a reputable company (OTC) and it'll last you a lifetime. It'll also cost you about $500.00
Oh, and grow stronger, I lift the steel ones every day. being in good shape helps with your racing skills.
Shawn