@2kemon said:

I'm considering ViaCAD 2D as one of the few affordable CAD packages.

for a commcerial usage you maybe should evaluate the ViaCAD Pro version (249U$) or at least the 2D/3D version instead of the pure 2D version, the latter it's only a handfull of bucks more:

http://www.amazon.com/exec/obidos/ASIN/B0019RJ202/vsg

hth,
Norbert