I prefer the GST. Let me tell you why. First, in terms of wealth, the gap between the provinces is not as big with regard to consumer taxes, as opposed to income taxes. Provincial consumer tax rates are therefore not as far apart.
Second, in light of the tax cuts announced by the Conservative government, if they totalled five points, it would be possible to transfer that entire tax jurisdiction to the provinces, rather than trying to agree on a few income tax points. Therefore, the federal government—