This is an old standby that would serve any player well. There is a need in any player's library for a single volume endgame reference work, and this book can fit that bill. While Fine's Basic Chess Endings is perhaps better known, I actually prefer this book for many players. For starters, it is in algebraic notation, and that is now the notation of choice around the world.

Second, I've often heard that average players will not study endgame books because they're too theoretical. This book seeks to eliminate some of the wheat from the chaff. I think it makes it generally more useful than other books of its kind. Keres also spends more time explaining what is going on than other books of its kind. Where Fine seems to fall into a pattern of stating a rule, providing examples proving the rule, state exceptions and provide examples proving the exceptions and then going on to another rule, Keres uses words to help the average player understand what is going on in the examples.

This sort of book is probably best used as a reference work. In that case, there may not be much difference among them all. However, for those who wish to use this sort of book as something more, Keres' guidance sets it apart from the others for the average player.