That's a good call. MSO will break your other formats, especially ODF. Also, whatever you do don't save an ODF file from MSO, it will break lots of small things. That's just how the company is. I recently had it screw up the background, indentations/style, and made non-printing sections visible/printed to name just three things.
PDFs will look good on all systems regardless of which fonts are installed or missing. How it looks on the screen in PDF is pretty much how it will look when it is printed.
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