I've been using both the Mac and PC versions of Mind Manager. They're very different but both nice. I've settled on Xmind for now but what I REALLY want is the ability to make a map then save it in a way that I can share with other people who don't get mind maps. Most people do get outlines though so I'd love to be able to make an OmniMap, export it as OOXML or something like that so mere mortals can contribute to it in MS Word then I can get it back into OmniOutliner so I can use it.

The ability for applications to share data with other users outside the application ecosphere as well as within is what makes an application truly great. Mind Manager for the PC does a decent job of that but the Mac version misses a lot of that functionality.

And YES, I've tried using OmniGraffle to make a mind map but it's not even close to any of the more dedicated products. PLEASE make a dedicated mind mapping product OmniGroup!