Interview and V are probably the more provocative and out there magazines in the US market. But both those publications are either hit or miss, for me anyways.
US Vogue is amazing, it was really bad in 07-08 but it's gotten so much better. I really appreciate the changes they have made with the layout, photographers, model selection, etc.
Harper's is just so bad now.

When Vogue was horrible at least Harper's was nice. Every time I go through my copy I thank Yahweh I subscribed when it was only $5.