I had posted last week when the Encyclicals of John XXIII became available for pre-order. The question posed was asking what the difference (other than Latin edtitions) were these volumes compared to the same encyclicals in the larger The Papal Encyclicals: 1740-1981 set. Specifically, I'm trying to understand if there are any qualities of the new, smaller volumes (formatting, tagging, etc.) that are improvements or enhancements over the large set. Again, other than the Latin...I get that part...the Latin is not in the larger set.
I see now that Logos is offering additional smaller (subsets) of Papal Encyclicals from Pius XI and Pius XII. All of these appear to be in the larger set.
All of this is a little confusing to me. I have the large set and would greatly appreciate understanding what the specific differences are...other than the Latin.
It would be a big help if Andrew or Louis or Alex or anyone with specific knowledge of the Catholic products mentioned could chime in. Any insight is helpful. 
Blessings,
Steve