I've used a number of PDF programs including Acrobat since Version 3. For small office use we wanted something cheaper than Acrobat that would still have the strength to edit PDF documents. PDF PRO is easy to learn. We have used version 7 and recently upgraded to version 8. However, after two weeks we are still unable to get PDF Converter Pro 8 to activate. We have an active support ticket and have spent hours on the phone with Nuance offshore technical support trying this and that... Endless, no solution yet. Very trashy company to deal with.