Probably on of the best books I've used is Groove Perspectives by Darryn Farrugia.
Amazing book and great if you want to work on dynamics and grooves!
The book's now sold in a double pack with the play along, but Darryn is an awesome player. Had the honor of being taught by him when I was studying in London! He's also on TUDW10 with his band 'Logic'
Check it out