I just noticed that the Logos team has added a tool called Logos 4 upgrade that will highlight which books you would get in an upgrade to a new package, VERY nice!!!
As a note it does not take into account which books you may already own but it does a great job of giving you a visual highlight of what books you get in an upgrade to a Logos 4 package.
Go here:
http://www.logos.com/upgrade
Then select which package you are interested in upgrading to by clicking the package and voila! You will notice the books you get are highlighted Yellow and the ones you have in your current package are Gray. Again, it did not take into account books I purchased apart from my package but still nice. Hey guys can we get it to account for the books we own already? I have Logos 4 Platinum and it gets hard to count that high sometimes, there are alot of books in these collections.
Thanks Team Logos!!