4 post lift vs. 2 post lift. Pros and Cons.

we just installed a 2 post at my house. 4.25" thick reinforced concrete is all that was required. ( was happy to see over 5" ), we did a 4 post at dads.
the 4 post I easier for my dad. I prefer the 2 post worked on one for years at the dealer. couldn't agree more with the common sense statement.
the locks on the arms in the rolls video obviously didn't work. first thing I did was give my rack a once over every morning. just like any tool, if not maintained
they can be dangerous. over the years we have done some sketchy stuff and survived. part of the reason we installed the lift is to Not have to be doing that kind of stuff.
what ever you install Be Safe!