Why do you say that, Xahar? (I'm honestly curious; I used to be more into election systems than I am now, so I'm mostly just uninformed.)
It's more or less proportional (especially with larger constituencies). However, unlike other systems of proportional representation, it allows those who vote for losing candidates to also have a say by considering lower preferences. It provides a link between elected officials and the electorate through its use of constituencies, so that legislators aren't completely faceless automata.
I agree, definately think we should adopt that in Britain as it also preserves the (slightly stretched these days, I'll admit) principle (wrong word but can't think of a better one) that you vote for an individual person (or people in this case) who happens to be a member of a certain party rather than for the party itself
