Which of these two endgame books? I am a beginner (approximately 1400) seeking to improve my endgame technique. Which one of these books would you recommend as suitable for my strength and why?


100 Endgames you must know by Jesus de la Villa 
Silman's Complete Endgame Course: From Beginner to Master by Jeremy Silman


I have to say that in general I don't like Silman's writing style and methods at all (i.e. Reassess your chess), but then again, this is endgames - and hence a different topic.
Since you are a 1400, Silman's book is the way to go. His book will give you the solid endgame foundation that you need. Only once you read his book up to "Endgames for Class A" should you get the other book.