I'm a big fan of Nunn's writing. He gives good insights into the ideas behind the position, which helps when you're looking for a plan in the middlegame.
I can't answer your specific question, because I don't play the Sicilian. But 30-50% of the players on the site do, so I'm hoping that someone can get you your answer. If you ask about the Caro-Kann, I'm your guy.
The local youth championship is in 12 days, so I started doing my opening preparation and had a problem: In Nunn's book "Beating the Sicilian" in the section about Kan(1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6) there is something not mentioned. In the variation 5.Bd3 Bc5 6.Nb3 he gives only reatreat for the bishop as 6...Ba7. After viewing the games, of one of my biggest opponents, in this variation I realised that what he actually played with black was 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 Bc5 6.Nb3 Be7.
What would you recommend against this line, any articles, books, or even your own opinions are welcome.
P.S. Do you thing Nunn's book worths reading?