Am leaning towards going with AutoCAD myself, used it extensively for construction detail drawings and cabinet layouts,
Vowed to never buy another windows based anything so is nice that they now make a version for MAC OS,
AutoCAD to me is perfect, importing drawings, scaling, resizing, mirroring details and drawing elements, plus the compatability of output to most operating software used by CNC or Water Jet or Laser cutting hardware.
AutoCAD LT is reasonably affordable for a professional design product, but it isnt for everyone, personally is easy as i can do both command line or key entry, but it can be tough to learn.