Richard's book finally arrived
I play 1. d4 as white, and was a little sceptical about this whole Tango business (if it was so good, why isn't it more popular?). My main concern was 3. Nf3 e6 4. a3, where i didn't think Black was okay in the KID positions, I bought this book mainly for the zurich nimzo coverage.
But after going through this book, must say black has many interesting resources. I do have a nagging suspicion that if the world elite turns their attention to the Tango, its defects might start to show... but right now a specialist can expect to score well. At lower levels, a casual player merely acquainted with typical themes can expect to rack up a nice plus score.
The best part of the book is Richard's nice explanations of typical plans and positions. In fact, his explanations in this book are even better at starting out a novice, than many other titles in the Starting Out series!
Overall a great effort from Richard, at least on par with his Play 1. d4!, which like another poster, I'm still finding good stuff in it after so long.