I don't agree with Joshua though about her S4 stories. I love those two. The Sontaran story isn't the best but it's good fun and that wierd skinny guy blows himself up which is great, and the Doctors daughter is great fun. Silly, but fun. It has a great feel of the classics too it I think.
I like them too, especially The Doctor's Daughter. Though, in fairness, it isn't particularly Martha that makes me love it, but she certainly doesn't spoil it.