Imagine the Doctor is at the end of his final regeneration, and because of some benevolent force, he is given one final life to live, but as one of his previous incarnations. Which of his old bodies do you think the Doctor would chose to live out his final years in? Each Doctor appears to have an instinct to remain in his current body (Six thinkin he's the best. Ten avoiding regenerating in Journey's End). Would he choose the body he just had, or do you think he would go for one of his previous incarnations.
Personally, I think if the Doctor had to chose, he would go with his fifth incarnation. With what ten said in Time Crash, his fifth incarnation seemed to be a defining moment for him, when he began to take a more advenurous and youthful approach to his life.
Personally, I think if the Doctor had to chose, he would go with his fifth incarnation. With what ten said in Time Crash, his fifth incarnation seemed to be a defining moment for him, when he began to take a more advenurous and youthful approach to his life.