Best Metal Swing Set For All You Parents Out There, Do You Think Metal Swing Sets Or Wood Swing Sets Are Better For Children.?

For all you parents out there, do you think metal swing sets or wood swing sets are better for children.? - best metal swing set

I have three daughters and I ask myself whether I want to buy on a swing made of wood or metal. There is a better than others? My children are 1, 5 and 6