Freestanding vs. wall mounted stall bars

Which one is better? Which one is easier to build and install? What about costs? Thanks!

My set is wall mounted and the total cost is about 160 United States Dollars.

Did you build it?

Wall Mounted 100%, you don't want that thing to fall on you when you are working on it, especially if it's metal.

wall mounted bars also take out less space!

Unless you have a specific reason that requires freestanding, wall mounted will always be the better option.