its pretty stable, maybe three or four big dudes could tip it. because of the long scissor arms the whole thing is kinda springy, it weirds me out a little, it is from harbor fright.
the whole thing set me back a G after it was all said and done, thats hardly a steal. but i figure ill probably never have a shop tall enough for a two post anyway so this makes sense. i just cant stand the idea of rolling around on my back anymore, sitting or kneeling is better then wearing any more holes in the back of my shirts.