GQ is the best monthly magazine, I've found. Compared with other men's magazines, it's miles more interesting.
Where normally you'd find 60% tits, 30% FoOtY!!!! and 10% shit facts about drinking and tanks, GQ seem to print accessible but sophisticated articles covering a pretty wide range of stuff.
Despite the fact the fashion they recommend is all extortionate, it's still useful to get tips from in terms of good clothes ideas.