I used to race sports cars, and still have several sets of jack stands. I never bought anything fancy. Mine came from O'Reilly Auto Parts or Harbor Freight. The ones from Harbor Freight are a pair of 6-Ton jack stands. I got them because they go higher. I could really lift a car up and make working underneath fairly easy. I never had one fail (obviously, I'm still alive). I use them these days on my Suburban.