MigrationWiz is easy to use, having EXTENSIVE documentation for any platform you can imagine. The service and support is superb; I've even seen some of my own feature requests make it into production. Review collected by and hosted on G2.com.
Like all platforms there can be hiccups and slowness for a couple hours - but I've never been hamstrung with a migration, as this is easily mitigated with good project planning. Review collected by and hosted on G2.com.



