Jubilee is a story that, in my eyes, represents some of the best of Big Finish. It subverts what you'd typically expect from a Dalek story and from Daleks in general, and this works well to explore how the Dalek mindset works. There are some nice elements of mystery and unknown which run through most of the story, which I like, but everything is explained by the end. As you may already know, this story was later adapted into Dalek from series 1 of New Who. I think Jubilee is better by a lot. The longer run time gives it more space to explore the concepts.