Taylor Swift nets the best week for a country album in a year as her "Fearless" set arrives at No. 1 with 592,000 . . . Her set is just one of six arrivals in the top 10 of the Billboard 200. The others? David Archuleta's self-titled debut, the "Now 29" compilation, T-Pain's "Thr33 Ringz," Enya's Christmas set "And Winter Came" and Christina Aguilera's Target-exclusive best-of "Keeps Gettin' Better" . . . In Progress Reports, we've got updates on AC/DC, Katy Perry and the return of our Holiday Songs radio airplay chart.