Comprehensive Network Management Software Recommendations?

Heya - I'm a long time lurker, but not a frequent poster.

I started a summer job this week, and my task is to research network management tools for the company that hired me. I was given a list of criteria:

??Able to scan multiple subnets.
??Lists all PCs, servers, printers, peripherals on the network.
??Lists operating systems and applications that are installed.
??Lists running services.
??Can be exported for reports.
??Customizable views are preferred.

I was also told that the software doesn't have to be FOSS, but that price would be a factor. The company is also largely Windows-based, so Linux solutions will probably not be taken into consideration by management.

I'm not necessarily looking for a "buy this!" response, but feedback from people in the field who can either recommend software that they use / have used, or recommend software to avoid. Sometimes anecdotal feedback helps you discover issues that don't come up in a data sheet or limited testing.

Thanks in advance!