I've been previously confused about the name and capabilities of the Amyuni products, too. For the purposes of clarity, I'll call them the Cheap One and the Not So Cheap One. A reply in a CompuServe forum that I read a while back seems to indicate that the Cheap one does indeed allow you to create PDFs, working as a printer driver the way that the PDFWriter does, but it also offers enough direct program access to allow you to print under program control, thus beating Adobe on both price and capabilities as a low end solution. The difference is that it's just a single-user license. This would leave the option open, though, for your clients to pony up the minor cost of the Cheap One to add PDF capability that your program could take advantage of.

JC