I would go for teletransporting. Although it destroysmy brain and body, I will be alive in Mars as I am here. If there is a mechanism to send me there for a mission, there should be something to get me back. So if whatever is destroyed can be rejoined here again, I will be back to earth may be after some treatments. But spaceship provodes just 50% chance even to reach there. While teletransporting confirms my presence in Mars. Also that would be a new experiment and I will be part of history. So in matter of success in reaching Mars I think my option of choosing tele transporting is better than spaceship.

Sorry am not sure about criterias of personal identity