Autodesk Revit is a great alternative to ArchiCAD, if you do not mind to buy under a subscription basis.
Mainly focused on 3D architectural projects and designs, Revit brings several tools to draw Floors, Roofs and Walls, with several object templates to fulfill the internals quickly and easily, and excellent drawing tools to give to the Floor or the Roof the basic shape you like, from customized ones to regular shapes and circles.
In respect to ArchiCAD, Autodesk Revit has also Modify tools, very useful to fast copy, flip, mirror, move and rotate your object, and also dedicated tools to realize conductors, pipes and terminals under the Systems section. But indeed, it does not support proper 2D design.
Check Revit Discount Page and our video review: