We use PDF Factory as it will group all of your plots together and then we print that to CutePDF which puts them all nicely into one PDF.
I really like the PDF format because most people have PDF reader and know how to hit print so simplifies things. The only small problem is them not understanding the scaling so they will just print to fit and the scale wont be exact. No biggy though.
In my old job and this one we get asked to plot AutoCAD drawings for different people and found that telling them to produce a PDF was so much easier as I wouldn't have to continually chase up the fonts they never sent or the plot styles.
