Tubular arms vs. Stock control arms

[ecgate]

Im in the process of rebuilding my 67 truck and was wondering what I will gain by spending $800 or so on tubular arms. What makes them $800 better than stock uppper and lower control arms. I will be lowering the truck with a 2.5" drop spindle and a 2-3" drop spring. Can somebody help me justify spending the extra cash on tubular a arms. And yes I already know they look sweet.