Microsoft BI Ranked Top of the Heap...
See some of the following quotes:
"In its report, written by James Richardson and three other Gartner analysts, the firm cites the attractiveness of Microsoft's integrated Office suite, its PerformancePoint Server released last year, and SQL Server to businesses standardized on Microsoft platforms. "The bundling and pricing of its BI products makes [Microsoft] an economically attractive offering that will be considered by many organizations," the analysts wrote, adding that Microsoft's large development community will further the platform."
"They also wrote that customers cite Microsoft for having the "best BI software quality of all the megavendors, with over half of them reporting no problems with the software," and attribute this quality, in part, to much of its technology having been internally developed rather than acquired."
You can view the Gartner article at the link below
Also, check the Microsoft Business Intelligence Web site here.