I've always liked the TV episode, but I feel this Target novelisation is a significant improvement. It dives in deeper into the Oods' thoughts and feelings, as well as giving us further Ood attacks on their way to freedom, such as a thrilling series of murders in a spa at Ood Operations.

We also get more of the aftermath here too, with the Doctor and Donna helping Ood Sigma with the clean-up job after they successfully claimed their freedom, and detailing how the Ood Operations company died due to the  revelations of their cruel treatment of the Ood.