Paul wrote:
You said about sticking to basic PDF fonts, but I would have thought that it would be the other way round - unusual fonts would be *more* portable because they are actually embedded within the document.
I'm not sure that's necessarily true. I think it is up to the software producing the PDF file to decide whether to embed fonts (either "unusual" or standard) or simply to enter the font name someplace in the document. If the font is not embedded and also not installed on the viewing machine, then the reader program uses what it thinks is a "close enough" font (determined, I think, from tables in the reader program).
Also, I'm pretty sure (but not positive) that some programs writing PDF files will draw characters as bitmaps if the corresponding font is neither embedded nor "standard". That frequently results in rather jagged output.
So IMHO using a non-standard font is rolling the dice. Paul