I think it's fair to say that critics of the first past the post system would say that one of the major issues is that, with a minority of votes, you get 100% of the power.
When we look at the two main streams you can choose as an alternative to that, you have the alternative vote system and you have some form of proportional system, and there are many configurations. Which of those two do you think is most likely to duplicate that problem of the first past the post system, and how?