Intermapper vs NetBrain vs some other for NMS

Hi all: I'm looking for information anyone might have comparing Intermapper to NetBrain for NMS. Stuff like devices up/down, interface utilization, building maps for documentation, etc. IMO, Intermapper works great, when it works. Tech support has been slow and often cannot fix the problems, not to mention they release updates about once every other week. Anyone familiar with any similar products? We are presently evaluating NetBrain and it seems really nice. We really like the Visio-like aspect of it. Thanks! -Ben