Derek Jacobi has narrated the second story in a more dramatic way because it is about dragons. The men who are trying to protect the town from dragons are not heroes at all still they manage to do their job correctly in one way or the other. Missions which Tom completes are quite appealing because we see how this young lad goes with the hobbits and then he is seen with trolls and other such creatures as well.
Painter Niggle was also looking for perfection in his works in this book and he was lucky that he got what he desired at the end of the story. In books like this, there is always something that can stay in the mind of the listener forever.