I wasn't trying to provide a comprehensive review of migration tools, but yes, Metalogix has some great features.  What I like about that particular tool is that it can migrate existing metadata values (such as creation date) into the same field in SharePoint.  This is really important for some organizations because without a tool, all documents end up with a creation date of the date you uploaded it to SharePoint, which is not always what you want.  I don't know that Metalogix does what Casahl does, which is to facilitate the migration/conversion of Notes applications, not just content.  Nevertheless, I agree with you - Metalogix has some impressive capabilities, even if when they were trying to show me a demo a few weeks ago, they couldn't get it to work so I can't say they could prove to me that it does what they say.  But I believed them anyway.