My favorite book was Wizard And Glass.
My favorite part was the battle at the end, when Susan breaks Roland, Cuthbert and Alain out of prison, then the shoot at the citgo, was Alain uses the speed shooter to take out Farson's men and blows up a few tankers. Then Roland puts two slugs in Jonas face at close range. Then the rest of Farson's men get trapped in teh canyon and eaten by the thinny... God did I love that book.