With your criteria I would recommend
New Testament Textual Criticism, by David Alan Black. It's concise and a comparatively easy read, inexpensive, done by a recognized scholar. Unfortunately, since it is copyright 1994 he doesn't include the Byz. Priority view, but he does talk some about the Hodges/Farstead majority position.
Dr. Black is an eclectic, but departs from them in holding to the longer ending of Mark.
As for the Byzantine or Majority view, follow Dr. Cassidy's recommendations. And anything you can find online by Dr. Maurice Robinson will be excellent.
If you want to go deeper you'll have to slog through some heavy reading. Let me know if you want more recommendations.