I have used the Lee Stand with the Lee Classic Turret, and it works perfectly. The concrete block(s) you suspend underneath gives it a low center of gravity; add the heavy metal construction and it is rock solid. I bought two blocks but used only one.
It's a little more difficult to use it with non-Lee products, but it can be done. A Hornady LnL Classic mounted using a Lee wood block worked equally well until the wood split because the Hornady's mounting holes were too close to the edges.
Lee sells a metal plate which would solve this problem; you would need to tap holes matching the press's mount pattern of course.
The stand does allow you to quickly switch presses/tools, and it also allows you to use other "normal" tables/desks/benches to support your scales etc.