I have four 2 ton and four 3 ton Torin Big Red jackstands. I really like them for the price. I have yet to see them warp, rust, chip, ect in the few years I have had them. Some even sit outside for extended periods exposed to the elements.
http://www.amazon.com/Torin-T43002-J.../dp/B000CO86BY
I have not yet, but need to look into the rubber pad that goes into the jacking point on the X5.
For the jack, I put a hockey puck on the pad itself for protection.