I struggled with Revit, I've not tried Archicad yet designing with parametric modeling programs was very restrictive. 8 years ago i employed 3 developers to create a parametric plugin for sketchup that allowed me 2 design whilst doing the structural grunt work behind the scenes. No more sticky geometry. It's made a huge difference to the quality of work and the amount of calls from trades people asking me to explain design intent or constructability issues.
More work in less time with less questions has allowed me to spend more time refining designs and become better at what i do.. I now employ 5 full time designers and still can't keep up.
Anyone else done anything similar?