It's all about Britney Spears and her "Circus" as the diva earns her fifth No. 1 album. It arrives with 505,000, the seventh-biggest sales week of 2008 and Spears' best frame since "In the Zone" premiered with 609,000 at No. 1 in 2003 . . . Akon is the other lone debut in the top 20, as his "Freedom" flies in at No. 7 with 111,000 . . . In Progress Reports, we've got updates on new No. 1 singles from Montgomery Gentry, Kings of Leon and Faith Hill.