Mac DevCenter: palettes or sidebars?

Following a dilemma that Gus Mueller faced when designing the UI for his latest release of VoodooPad 3, Mac DevCenter has posted a request for feedback on this most heated of UI topics: palettes or sidebars? Preferences can easily sway in either direction, and I personally miss the old-school functionality of Mail's pre-Tiger drawer (yay for column widths that don't have to be constantly re-adjusted), though I will concede that the drawer look is old and ugly by today's slick UI standards of palettes and sidebars.

But what do you TUAW readers think? Do you prefer palettes, like in Photoshop, OmniOutliner, iWeb and Pages, or do you prefer the sidebar UI of Tiger's Mail, ecto and NetNewsWire's subscriptions panel (though it's interesting to note that NNW also uses a drawer for its site catalog)? Sound off.