Hi, I've got the German Tietze Schenk 6th ed. (1983, 850 pages), the latest 14th ed. (2012, 1800 pages & DVD) and now also the AoE III (2015, 1190 pages). The Tietze Schenk served me very well @ university, letting me develop several very precise AC and DC current sources from the more or less theoretical circuits.. The Tietze Schenk may be more academic and goes more deeply into the theoretical background. The AoE, I did not know before, is much more fun, due to its vivid style, and also gives quite good theoretical background, compared to T & S. But I really dig these "best in class" used cases from the HP instruments, for example. I've learnt a lot from these Fine Arts HP schematics, so this idea of AoE is really great. The AoE III is relatively cheap here in Germany (around 66€), because we otherwise have a price binding here, for domestic books. I'm glad, having both electronic bibles, complementing each other. Frank