I'd like to start by saying that I think change is absolutely necessary. I think it's a travesty that the majority of votes cast in the last election were essentially ignored, and the majority of voters then did not have representation of their choosing. I think that's despicable.
Personally, I would support any form of proportional representation. It would be a massive improvement. But my preferred form of proportional representation would be single transferable vote. The reason is voter choice; it gives voters more power because they have more representatives to choose from.
Also, I don't think single-member districts are practical. I don't think it's reasonable to think that one person can satisfactorily represent every constituent of a riding. There will always be people on one side of an issue and on the other side of an issue within the same district. Single-member districts just don't make sense to me.