I would say Harper's is the best I've seen. There is a section called readings, which is a compilation of various random things that have appeared in writing (this month included court transcripts (one clarifying that a court reporter should have written "ho" instead of "hoe" and why), a newsletter form the Jerusalem Biblical Zoo, a Fox news radio interview, recipes for locusts from a UN website, and an essay on aquariums and their importance in the community for urban renewal etc,.)
It is really a nice smattering of material. There are lots of interesting articles and always some boring, wordy ones. Always a work of fiction (short story) and dense reviews of new books. The only thing I don't get from Harper's that is on the MCAT is bad writing.