Anybody got a favorite free "print to PDF" printer driver they'd recommend?

Today, I downloaded & installed PrimoPDF, but it's a PITA to use solely
because its "Save File" dialog is woefully inadequate.  The actual output
looks good, but naming it and getting it to where you want can be a real
exercise in frustration.  Which is a real shame, considering that the "Save
File" dialog should be a Windows Programming 101 topic.  Support on the
PrimoPDF.com site is nearly non-existent.

My requirements for this type of utility are that it be freeware and
functional.  Would prefer it not to be nagware, but given the frequency of
which I can see using this type of utility, this is optional.  Based on my
experience with PrimoPDF, any alternative would have to have a much more
functional "Save file" dialog, with user-defined defaults, blah, blah, blah.

Anybody got a fave they can recommend?

- Dan