I had used Acrobat for years and noticed it getting more and more bloated. With Acrobat Professional 8 I started to have problems printing PDF's that were attached to emails on my HP 1020 printer. It would lock up the spooler and I would have to jump through hoops to clear it out and reset it. Since I switched to PDF-XChange a couple of months ago I have never had a problem with any PDF files and the markup features can go toe to toe with Acrobat any day. I will have to go to the PRO version so I can use the extract and crop pages without getting the "Demo" stamp on the results but it still will be a great bargain compared to Acrobat Professional.