PDF's created with Acrobat & Distiller leave unwanted artifacts that can be seen in most PDF preview apps, specially email programs & also Reader. This prevents our customers from approving our PDF's. However, PDF's created from Illustrator do NOT have these visible artifacts. Our work flow is built around Distiller to create proofing PDF's & this is a PITA to do from Illustrator. In the attached file keylines of the logo can be seen thru the product