Despite their arty, glam-punk reputation, the Manic Street Preachers offered one of the most straightforward and gracious sets of the year last night. True devotion to a band is an insane, beautiful thing. It causes you to spend thousands of dollars on records, T-shirts, posters and buttons. It compels you to make the 450-mile drive from Albuquerque to Denver for a single night of musical bliss — as an excitable Welshman named Neil did yesterday to see Manic Street Preachers . The Monday nig