- I recently upgraded to Logos 6 Diamond from 5 Diamond. It seems to be a bit more intuitive than 5 -- the available options on my selections now show up in places that I expect. The additional new features?? .. still working my way through them as needed. Overall Logos 6 has proven very useful and valuable in my rather large set of current research topics. I have been able to move from one to the other easily which certainly has helped with my limited study time schedule.