In your opinion, what is the best Reformed commentary series?
Logos has several. It really depends upon what type of study you are doing. Do you desire Hebrew/Greek studies, etc.
Ligonier Ministries lists the top 10 of each book. You can see what fits you type of study best:
http://www.ligonier.org/blog/top-commentaries-on-every-book-of-the-bible/
Covenant Seminary has a list to:
http://www.covenantseminary.edu/library/commentaries/
Calvin's Commentaries. Really, they are still good.
Also, anything by Waltke,
Evangelical Press Study Commentary
https://www.logos.com/product/30485/reformed-expository-commentary
For quick pastoral reference/preaching, I'd vote Tyndale OT/NT. Several reasons: 1) complete (e.g. all books of the Bible are covered), 2) inexpensive ($4/volume or less), 3) addresses the concerns I'd have when preaching a passage vs. a lot of technical items. For the technical items, I go to WBC, NICOT/NT, etc, but those aren't predominantly Reformed.
