I am very partial to "The Razor's Edge." This album came out right around when I first started learning guitar (or at least had one in my regular possession), and I was into it. This album featured "Money Talks" and "Thunderstruck", both being guitar staples. Where as I think "Back in Black" is certainly there greatest commercial success, I do agree that they have many other records that combat with it.

Singer Brian Johnson was also in a band called "Geordie" that I think you should check out if AC/DC is your jam.