I only just came across PDF-XChange Viewer this past week, amazing as it may seem (my only excuse being that there's such a vast amount of software out there so it's easy to miss seeing even a gem like PDF-XChange Viewer).
Speaking only about VIEWING of PDF documents, I have written articles about the severe shortcomings of Adobe Reader and my annoyance with Reader 9.0 not only being more bloated than ever but also how it dropped out a basic feature. See for example my iTWire article at http://www.itwire.com/content/view/22043/1127/. In one of the linked articles a representative of Adobe Systems explained why they were "forced" to remove this feature sue to issues with Windows Vista (hard to believe, and most unfortunate).
UPDATE (22 December 2008): I have just uploaded my artcile to iTWire, see "PDF-XChange Viewer — the best free PDF viewer yet?" at http://www.itwire.com/content/view/22426/1127/
I have now made PDF-XChange Viewer my preferred viewer, since it's even better than my previous favorite (Foxit Reader). The ability to keep more than 10 entries in the recent files list is fantastic, and the ability to pin some of these is even more outstanding! I'll soon be writing an iTWire article about my newly-found treasure.
I have a few suggestions/requests regarding tabs in PDF-XChange Viewer.
They're nice-to-have rather than critical, and they're available in the two browsers that I use (Firefox, and Avant Browser), and find them extremely handy for a "power user" who views many documents every day:
- - Make the active tab stand out a bit more, by bolding the text in the tab, or increasing it's background colour contrast versus the other tabs.
- - Allow multiple rows of tabs (maybe allowing you to set a limit for the number of rows of tabs).
- - Have an option for coloured tabs (as per a Firefox add-on)
- - Allow the tabs to be optionally placed at bottom of the window, to reduce "clutter" at the top. This is something I do with Firefox and Avant Browser.