The translation: Exceptional. Article writers and doctors quote the NIV. The notes: Deep, fascinating. It gives a clear, relevant to study, re-write or a "what it means". There are also loads (more than you could need) quotes of parallels in the Bible from all over, which are surprisingly clear and relevant. On average I'd say 2in10 verses in the OT have a note (some pick on 1 verse others talk about themes you'd find in a passage) and 5in10 in the NT (very insightful and shed new light on tired verses). The notes are not detailed enough that you learn everything there is to know about something as it should be, but do point you away from misinterpretation. Close second in line for usefulness is the "concordance", basically a word list. In my opinion is about 90% complete. Probably something to do with the list for Hebrew/Greek/Arabic? etc words and I am looking for an English word. Maps: Mine has eleven maps, which I have yet to use in more depth than to find distances between nations (there is a very detailed index of places where you can look up a place and it gives you a map reference). At the back is a short list of key people. Many types of extras are fascinating good like David's and Herod's family tree, list and purposes of the seven covenants, timeline of Paul's life. Concordances: A huge 8 page "harmony of the Gospels" and a 3 page "life of Christ" in Matthew bring things into perspective and context. There is an indepth analysis at the start of every book. Definitely very glad I got one. Prices: I got mine for £32, which is fine. If you can get it lower, do so. Amazing for study but not for the tame.