This is a well-done modern PDF, with bookmarks, clear text and good art. I prefer the first printing to this later release, but that is probably 90% nostalgia.
This PDF seems to have severe problems - it loads very slowly on my phone, takes 10 minutes or so to load on my tablet, and crashed my Kindle. By comparison, the much-larger Rules Cyclopedia PDF loads quickly and reads fine on all three devices.
[2 of 5 Stars!]