Best endgame material

Im an almost 2100 15 years old. chessplayer. My openings are mostly fine and Im quite strong in the middlegame. My serious issue however is the endgame. This disability makes me lose much endings and hinders my potential. I have figured out I seriously need to fix my endgame weakness by I don´t know which books to use. Are karsten Mullers DVD.s any good or is there some good book i should stick to. I have Dvoretskys endgame manual in chessbase format but I think i need to train strategic endgames as well. Do you guys have an recommendations on good endgame books?

"Mastering the endgame"  by Glenn Flear is a good book.

Various endgame study possibilities discussed at:

https://web.archive.org/web/20140708103149/http://www.chesscafe.com/text/review594.pdf

https://web.archive.org/web/20140708105702/http://www.chesscafe.com/text/review645.pdf

https://www.newinchess.com/Shop/Images/Pdfs/9026.pdf

https://web.archive.org/web/20140708234309/http://www.chesscafe.com/text/review704.pdf

http://www.gambitbooks.com/pdfs/Understanding_Chess_Endgames.pdf

https://chessbookreviews.wordpress.com/tag/chess-endgames-for-kids/

http://www.gambitbooks.com/pdfs/Chess_Endgames_for_Kids.pdf

http://theweekinchess.com/john-watson-reviews/endings-endings-endings

http://theweekinchess.com/john-watson-reviews/the-end-game-comes-before-we-know-it

http://theweekinchess.com/john-watson-reviews/theres-an-end-to-it-all

Before buying any particular book, I suggest going to the publisher site to see if it is possible to view a sample.