Critics may have been divided in their reviews of  Eminem's "Relapse," but the public has given the rapper's first studio CD in five years a big thumb's up. Expect the project to sell north of 600,000 copies and come in on top of the album chart on Wednesday.

Not only does Detroit's favorite son claim the top spot of the week, the tally will be enough to score him the biggest opening sales week of 2009 so far, besting his interscope labelmates U2, whose "No Line on the Horizon" sold more than 480,000 copies earlier this year.

Green Day's "21st Century Breakdown,"  last week's No. 1 album, drops to No. 2 in its first full week of sales. Its tally, according to Hits Daily Double, should be around 170,000 units.

Unlike last week when there were only two debuts in the Top 10, this week, the chart is chock full of them-and it's a diverse lot, indeed.  Look for Kenny Chesney's greatest hits to come in at No. 3 with around 80,000 copies sold. Next comes rappers Method Man/Redman at around 65,000. The rappers are in a dead heat with new CDs from comedian Dane Cook and Busta Rhymes . The soundtrack to "Hannah Montana" keeps selling strongly enough to stay in the Top 10, while Tori Amos's latest vies for No. 8 with singer Kate Voegele. Both are expected to sell around 45,000 copies.