I really enjoyed this. Sitting down and reading any full work of any author in Late Antiquity can make you want to blow your brains out, but this one feeds you in small yet still relevant doses.
The chosen sources are from a very broad selection, and it covers everything from around Diocletian to the Muslim Conquest. There is commentary on each individual source as well.
The best thing about it is the way it's set up though. It's divided into topics (such as administration, Roman army, Christianity, etc.) rather than putting it into chronological order and it's further divided into different subtopics (to compare with the above examples: Imperial administration, recruitment, asceticism, etc.). It essentially provides you with a few examples of everything you could ever want to know about this time period.