I queried someone at Logos who has put in a good word about PBBs on his blog:
"PBBs are great for someone on a low budget who wants to accomplish very basic stuff like reading and basic searching. Here are some of the things that PBBs lack:
1. Advanced tagging and linking to other resources.
2. Careful proofreading and testing for errors.
3. The ability to function as a Bible, commentary, etc.
4. The ability to change the English font.
5. The ability to highlight text and add notes.
Personally, I have very little use for PBBs, but I know that some people just love them and don't own much else. That's fine; we all have our different purposes, likes and dislikes, and budgets!
My advice to you would be to download the PBBs and try them out. See if they meet your needs. Then purchase something from Logos that you already have in PBB and compare their quality, functionality, etc. That should help you make a decision on whether the extra cost is worth it."
Sounds like good advice to me, but I would love to hear for Logos users who've used both versions---Logos and PBBs.
Bill