What do you mean by 'works best'? Design errors? Graphical errors? I have modeled in RAM and I'm just getting into the Revit Structural demo, but which would you say is a better modeler? I'm use to getting designs from RAM from engineers with inaccurate top of footing, top of steel, edge of slab, slope and the like. I know this won't fly in a BIM environment, can these be easily overcome in Revit? Thanks.