Configuration Manager 2007 R3 and Operations Manager 2007 R2 were placed by Gartner in the Leaders quadrant in the latest Magic Quadrant reports.
PC Configuration Management Life Cycle Management
http://www.gartner.com/technology/media-products/reprints/microsoft/vol2/article6/article6.html
and
IT Event Correlation and Analysis
http://www.gartner.com/technology/media-products/reprints/microsoft/vol2/article5/article5.html
See also the announcements on the System Center Nexus blog: