https://www.amazon.com/Commentary-Manuscripts-Text-New-Testament/dp/0825443407/
Logos has had many of Comfort's manuscript books (and commentaries).
https://www.logos.com/search?filters=author-13035_Author&sortBy=Relevance&limit=60&page=1&ownership=all&geographicAvailability=availableToMe
This one is more recent, and quite interesting. You're probably well familiar with Metzger's. This one has 3 perspectives ... discussions of individual mss's, NT books and their respective mss's, and finally, the bulk of the book ... selected verses and interpretive impacts of mss differences.
Below is from A-Company (on sale), and a section from Titus:
