Coil Over vs Torsion Bar

I think the original question is not just about coilover shocks by themselves. Guys are always asking should I beef up my t bar setup or purchase one of your systems, gerst, rms, etc.
As I mentioned before, if these modern retrofits are going to be billed as improvements in handling, some real specs should be advertised. Camber gain or loss in turns keeps the tires square in turns as you well know. However, I've seen several pictures from auto x and open track where the outside tire is leaning over in pos camber.