Hi,
QuarkXPress 8.x has its own PDF engine to create PDFs.
Its not mandatory to install Acrobat to create PDFs as in case of QuarkXPress 5.x
From QuarkXPress 6.x, QuarkXPress has its own PDF engine to create PDFs.
You can download evaluation version of QuarkXPress 8.x and try it for 60 days
I hope this information helps