"Most Economic Bang"

Recall E.J. Dionne making this argument 10 days ago and Ramesh Ponnuru responding?

Paul Krugman in today's NYT:

The point is that nobody really believes that a dollar of tax cuts is always better than a dollar of public spending. Meanwhile, it’s clear that when it comes to economic stimulus, public spending provides much more bang for the buck than tax cuts — and therefore costs less per job created [...] because a large fraction of any tax cut will simply be saved.