I like both Foxit Reader and PDF Xchange Viewer, I have use both off and on for several years. PDF Xchange appears to load faster but then an issue with Firefox started happening where PDF Xchange's add-on was causing Firefox to load slow and it wouldn't read documents within Firefox. The problem got worse with PDF Xchange updates and Firefox upgrades to the point that Firefox would use 100% CPU for several minutes and sometimes had to be killed with Task Manager because it wouldn't load at all. It took me awhile to find the add-on causing the problem, once PDF Xchange's add-on was removed, Firefox started loading correctly. I experienced a similar issue on my other system where Firefox was also running slow. I really don't think the add-on is completely compatible with the latest version of Firefox because this system didn't have any other add-ons except the default ones that came with Firefox. I never had any problems with Foxit Reader, because I choose to stay with it. Thanks.