Enterprise Network Management Systems?

Luke A. Kanies asks: "Does anyone have any experience with any enterprise-level NMSs? I need to implement one at a relatively large DSL provider in the next couple of months, and I can only find marketing materials so far. Has anyone used netcool, COMMAND/POST, or OpenMaster? Netcool looks like the best, but I would like some real-world stories before I try to roll one of these out. "