The Economist and The New Yorker are both high-quality and put almost all of their content from the print magazines in their RSS feeds, and between the two of them it's nice getting a European / US and center-right / center-left perspective.

The biggest problem is that The Economist RSS feed is only updated once a week, so you've got this deluge of info. Still I find it my primary source for serious news. The New Yorker features some of the best investigative journalism and high-quality writing, but doesn't make an attempt to cover the full spectrum of ordinary news in any given week.