I just got to the end of series 3 this evening and Martha has now soared into the top spot for me. Such a brilliant companion. Selfless, brave, intelligent. I could go on all night. She more than proved her worth throughout the series and it's just a shame that her stint was so short. I like Rose, but I dont see how people could think she was better than Martha. What she did for the Doctor and the Earth was brilliant and unlike her predecessor she had no selfish intentions whatsoever. It was sad to see her leave but she did it with such dignity and pride that you were left willing her to go and be brilliant and I'm sure she was. Much Martha love from me