MindManager comes with PDF-XChange and some users upgrade to the full version like
Steve Rothwell. Before MindManager had a PDF printer I choose the
Fineprint and PDF Factory Pro combination. This allows me to print multiple maps to a single sheet e.g. 4 x A5s to an A3 sheet and to print several maps into one PDF document.
Regardless of the PDF printer you use make sure you have the right graphics resolution settings. Typically a map will be fitted to an A4 sheet or Letter sheet. If the settings are 96dpi and 75% jpg compression, on many maps the smaller text in the sub topics will appear fuzzy. It will not get better zooming to 150% or 200%. The more topics and text on a map the smaller the printed font size on the sheet.
Frequently I change the settings to 300 dpi and 95% compression. This will be better for your readers and certainly for printing. It will produce larger file sizes.