Moreover, you can preflight your PDF files within Acrobat. Most significant for prepress folks is Acrobat 6.0 Professional’s ability to output in PDF/X-1a and PDF/X-3 formats, ISO-standard versions that are more restrictive - and hence more predictable and dependable - than other PDF flavors.
But it may leave its secondary market, engineers and architects, stranded by the side of the road. With all the features of the Standard version and then some, Acrobat 6.0 Professional is a dream come true for graphic artists and prepress pros.