Used Vectorworks for a couple of years back in my 'Mac is King' era... but its incompatibility with MicroStation (which seems to be what 8 out of 10 architects prefer) just became time consuming to deal with...
Soooo much software to choose from.... soooo much fun to be had... just learning SketchUp as a quick 3D viualisation tool at the mo... and I'm loving it....