The x64 version is vastly superior for heavy document work. Only use x86 if forced by legacy OS or plugins.
: Users can create professional-quality PDF files from over 300 different file types. It also features high-fidelity conversion to Microsoft Word , Excel , and PowerPoint , preserving the original document's layout and formatting. nitro pro 9.5.1.5 final -x86-x64-
: High-quality conversion of PDFs to Microsoft Word, Excel, and PowerPoint formats. The x64 version is vastly superior for heavy document work
—
Back to Basics: Revisiting Nitro Pro 9.5.1.5 Final (x86/x64) and better for batch operations
Nitro is significantly lighter, faster, and better for batch operations, while Acrobat has slightly better prepress tools.